| KOMATSU LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120119464 | Off-Road Truck Suspended with Rubber Spring Device - A rubber spring device is formed by alternately laminating a plurality of layers of hard plates whose linear dimension W in a direction parallel to the longitudinal direction of each equalizer bar is shorter in plan view than a linear dimension H in a direction parallel to an axle direction, and rubber layers. The rubber spring device is disposed between an end portion of each equalizer bar and a center axle in an articulated dump truck, and is allowed to function as a suspension. Thus, even when the rubber spring device is deformed into an accordion shape, peak positions of an internal stress within each rubber layer can be dispersed and reduced, thereby preventing generation of cracks within each rubber layer. | 05-17-2012 |
| 20120114451 | Work Transfer Apparatus for Press Machine, and Work Transfer Unit - A workpiece transfer apparatus includes: a feed driving mechanism that drives a transfer bar in a workpiece transfer direction; and a lift/clamp driving mechanism that drives the transfer bar in a lift direction and a clamp direction. The lift/clamp driving mechanism includes: a support of the transfer bar; first and second carriers movable in the clamp direction; first and second carrier driving mechanisms that drive the first and second carriers; a parallel link that rotatably connects the first carrier with the support; and a driving link that rotatably connects a first link of the parallel link and the second carrier. A first guide that guides the first carrier and a second guide that guides the second carrier are parallel to each other and are shifted from each other in the workpiece transfer direction. | 05-10-2012 |
| 20120108378 | TRANSMISSION SYSTEM - A sun gear of a first planetary gear train is connected to an input shaft. A carrier of the first planetary gear train is connected to a sun gear of a second planetary gear train and to a first pump/motor. A ring gear of the first planetary gear train is connected to a second pump/motor, and a ring gear of the second planetary gear train is connected to an output shaft. A first clutch is provided for engaging and disengaging a carrier of the second planetary gear train and the ring gear of the first planetary gear train with and from each other, and a second clutch is provided for engaging and disengaging the carrier of the second planetary gear train and a fixed end with and from each other. | 05-03-2012 |
| 20120093624 | WORK MACHINE AND CONTROL METHOD FOR WORK MACHINES - In a work machine, a control unit controls a pilot control valve for controlling the opening area of a first direction switch valve in executing the combined operation to be less than or equal to that in executing a single operation. The combined operation represents an operation of simultaneously operating first and second actuators. The single operation represents an operation of operating only the first actuator. Further, the control unit determines the opening area of the first direction switch valve in the combined operation based on a hydraulic pressure detected by a hydraulic pressure detector unit. | 04-19-2012 |
| 20120085192 | GEAR DEVICE - A gear device includes a gear, a pin, a plate member, a retainer portion, a contact part and a non-contact part. The pin is inserted into an opening of the gear. The plate member is disposed on a face of the gear and attached along an outer peripheral surface of the pin. The retainer portion is disposed in a vicinity of an end portion of the pin, with the plate member being interposed between the retainer portion and the face of the gear. The contact part is formed by faced surfaces of the retainer portion and the plate member with parts of the faced surfaces annularly making contact in a position closest to an outer peripheral surface of the pin. The non-contact part is formed by the faced surfaces with parts of the faced surfaces not making contact in a position away from the outer peripheral surface of the pin. | 04-12-2012 |
| 20120082887 | ELECTRICAL STORAGE UNIT - A plurality of electrical storage elements ( | 04-05-2012 |
| 20120068432 | DUMP TRUCK - A step arrangement of a dump truck includes a third step that leads down in an up-and-down direction of a vehicle body while being gradually directed forward, and a second step that is provided to a lower end of the third step and leads down in the up-and-down direction while being gradually directed from an outer side toward an inner side of the vehicle body. The height of an outer lower portion of the second step is higher than the height of an inner lower portion thereof. | 03-22-2012 |
| 20120060487 | WORKING MACHINE - In the working machine, first and second pilot flow paths are directly or indirectly connected to to a tank flow path ( | 03-15-2012 |
| 20120057956 | WORK VEHICLE - A work vehicle includes a pair of booms, a link mechanism and a control unit. The booms are attached to a front part of a vehicle body in an upwardly and downwardly rotatable state. The link mechanism couples a working unit to tips of the booms. The link mechanism is configured to keep the working unit in a posture generally parallel to the ground without rotating the working unit with respect to the ground while the booms are elevated from a position where the working unit is disposed on the ground when the working unit is a fork. The control unit is configured to execute a tilt angle adjusting control for the working unit in accordance with variation in an angle of the booms while the booms are elevated when a tilt angle of the working unit is greater than or equal to a predetermined threshold. | 03-08-2012 |
| 20120056473 | ROLLER WHEEL FOR TRACK-TYPE TRAVELLING VEHICLE - A roller wheel for a track-type travelling vehicle is disposed on a non-ground-engaging side of a track and supported by a vehicle body frame. The roller wheel includes a shaft, a roller assembly and a bearing. The shaft is supported by the vehicle body frame. The roller assembly is disposed on an outer periphery of the shaft. The bearing allows the roller assembly to be rotatably supported by the shaft therethrough. The roller assembly includes a tubular inner roller shell disposed closer to the vehicle body frame, and a tubular outer roller shell disposed outwards of the inner roller, the tubular outer roller shell being coupled to the inner roller shell by a straddle fitting structure. | 03-08-2012 |
| 20120041651 | Traction Control Device - The invention provides a traction control device capable of ensuring a sufficient acceleration and course traceability during the turning of a vehicle irrespective of the type of driving system or a road surface condition. A traction control device of the invention includes: a control-start determiner that determines whether or not to control a braking mechanism; and a traction force estimating section that estimates a traction force between each of wheels and the road surface. The traction force estimating section includes: a control condition determining section that determines a control condition of the braking mechanism based on a result of the determination of the control-start determiner; a traction force initial value setting section that sets an initial value in accordance with a result of the determination of the control condition determining section; and a traction force modifying section that modifies the traction force based on a control deviation. | 02-16-2012 |
| 20120034935 | MOVING BODY AND SYSTEM FOR MANAGING INVENTORY INFORMATION OF MOVING BODY - An object is to easily manage inventory information of an moving body such as a work machine at each physical distribution center substantially in real time, and an moving body | 02-09-2012 |
| 20120020126 | CONTROL DEVICE OF TRANSFORMER COUPLING TYPE BOOSTER - A control device of a transformer coupling type booster performs switching control of applying ON/OFF switching signals to the respective switching elements and alternately repeating, at a predetermined cycle, a voltage positive polarity period where an inter-terminal voltage of the low-voltage side winding and an inter-terminal voltage of a high-voltage side winding have a positive polarity, and a voltage negative polarity period where those inter-terminal voltages have a negative polarity. Upon performing the foregoing control, added is control of providing a zero voltage period between the voltage positive polarity period and the voltage negative polarity period of the inter-terminal voltage of the low-voltage side winding and the inter-terminal voltage of the high-voltage side winding in order to lower a transformer effective current value. In this case, the zero voltage period is formed between the voltage positive polarity period and the voltage negative polarity period of the inter-terminal voltage of the low-voltage side winding and the inter-terminal voltage of the high-voltage side winding by providing a phase difference between the respective switching signals to be applied to the respective switching elements of the low-voltage side inverter and providing a phase difference between the respective switching signals to be applied to the respective switching elements of the high-voltage side inverter. | 01-26-2012 |
| 20120017588 | Engine - An engine includes a variable geometry turbocharger, an EGR valve device, a hydraulic servo drive device that drives the variable geometry turbocharger, a hydraulic servo drive device that drives the EGR valve device, an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, and an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, the EPC valves being attached to the EGR valve device. | 01-26-2012 |
| 20120011833 | Exhaust Gas Purifying Device for Internal Combustion Engine - An exhaust gas purifying device for an internal combustion engine includes an inflow case provided with an inlet pipe, a catalyst case in which an oxidizing catalyst for dosing is housed, a filter case in which a soot filter is housed, and an outflow case provided with an outlet pipe, and is attached to an attached target at two attachment points mutually spaced in the axial direction of the cases. At one of the two attachment points, which is defined on the catalyst case, the catalyst case is firmly fixed. At the other attachment point, which is defined on the filter case, the filter case is attached slidably in the axial direction. | 01-19-2012 |
| 20120010790 | FUEL CONSUMPTION SAVING CONTROL DEVICE FOR WORK VEHICLE AND FUEL CONSUMPTION SAVING METHOD FOR WORK VEHICLE - A fuel consumption saving control device for a work vehicle includes: a vehicle speed detector | 01-12-2012 |
| 20120004816 | Construction Machine, Method for Controlling Construction Machine, and Program for Causing Computer to Execute the Method - A controller of a construction machine includes a target command value computing unit generating a speed target command value for normal motion of a working equipment based on a manipulating signal, a target command value correcting unit correcting the command value, and a command signal output unit outputting a command signal to a driving device based on the corrected speed target command value. The target command value correcting unit includes a vibration suppressing unit generating a speed target command value for vibration suppression to suppress generation of vibrations in the working equipment based on the command value, a peak value recognizing unit recognizing a peak value of the command value based on the command value sequentially generated by the target command value computing unit, and a target command value compositing unit compositing the command values according to the peak value to correct the command value. | 01-05-2012 |
| 20120003071 | COUNTERWEIGHT - Disclosed is a counterweight which is filled with a heavy-weight concrete containing, instead of currently used iron ores, a heavy-weight aggregate that scarcely causes the material segregation from cement paste and which can be produced at a low cost and is effectively enhanced in the filling factor of heavy-weight concrete into a case. A counterweight | 01-05-2012 |
| 20120003070 | CONSTRUCTION VEHICLE - The construction vehicle is provided with an engine, a clutch, a travel device, a work equipment, a drive force setting dial, and a controller that includes: a theoretical value determination unit that determines a theoretical value, for the degree of engagement to make the upper limit value of the drive force equal to a set drive force; an operational state determination unit that determines whether the work equipment is outputting the drive force in a predetermined travel direction; a drive force determination unit that determines whether the drive force is greater than the set drive force; and a degree of engagement reduction unit that, if of operational state determination and of drive force determination are both affirmative, causes the degree of engagement to approach the theoretical value. | 01-05-2012 |
| 20110318157 | Construction Machine, Method for Controlling Construction Machine, and Program for Causing Computer to Execute the Method - A controller constituting a construction machine includes: a target value computing unit that generates a speed target value of a boom based on a lever manipulating signal; a target value correcting unit that corrects the speed target value; and a command signal output unit that outputs a command signal to a boom driving device based on the corrected speed target value. The target value correcting unit includes: a motion information acquiring unit that acquires motion information on a motion of an arm; a maximum value determining unit that determines based on the motion information a maximum correction value for reducing suppression of a floating motion by a floating motion suppressing unit as the motion of the arm becomes faster; and a correction value regulating unit that corrects the speed target value based on the maximum correction value. | 12-29-2011 |
| 20110318156 | CONSTRUCTION VEHICLE PROVIDED WITH WORK EQUIPMENT - The construction machine includes a propulsion device the working equipment, and a controller that controls the propulsion device. The controller performs attitude determination of determining whether or not the present attitude of the working equipment corresponds to a predetermined attitude, performs propulsion determination of determining whether or not the present propulsive operation of the propulsion device corresponds to a predetermined propulsive operation performed while performing a predetermined construction task that applies an over load to the working equipment, performs driving force determination of determining whether or not the magnitude of the present propelling force corresponds to a predetermined magnitude at which an over load is applied to the working equipment, and reduces the propelling force outputted from the propulsion device when the results of attitude determination, propulsion determination, and driving force determination are affirmative. | 12-29-2011 |
| 20110318155 | Construction Machine, Method for Controlling Construction Machine, and Program for Causing Computer to Execute the Method - A construction machine includes: a working equipment; a manipulating unit that manipulates the working equipment; and a controller that controls the working equipment. The controller includes: a rolling compaction determining unit that determines whether or not the working equipment is under a rolling compaction operation for hardening earth and sand through reciprocation; and a command output regulating unit that controls the working equipment so that a motion speed of the working equipment does not exceed a predetermined maximum value when the rolling compaction determining unit determines that the working equipment is under the rolling compaction operation. | 12-29-2011 |
| 20110308879 | CONSTRUCTION VEHICLE - A wheel loader ( | 12-22-2011 |
| 20110308878 | CONSTRUCTION VEHICLE - A construction vehicle includes a hydraulic pump for travelling driven by an engine and a hydraulic motor for travelling driven by a pressurized oil discharged from the hydraulic pump. A control unit is configured to set an upper limit of a command value of an acceleration opening degree in accordance with a magnitude of a travelling load and a magnitude of a vehicle speed, and to set a lower limit of a displacement of the hydraulic motor for travelling in order to maximize the vehicle speed at the acceleration opening degree limited to a predetermined amount. | 12-22-2011 |
| 20110308778 | EGR COOLER - An EGR cooler includes: a casing in which cooling water flows; a plurality of tubes in which exhaust gas flows, the plurality of tubes being housed in the casing; a header plate to which ends of the plurality of tubes are bonded, the header plate being bonded to an end of the casing; an inlet tank into which the exhaust gas is introduced, the inlet tank being bonded to the end of the casing; and a shielding member being provided in the inlet tank to shield a circumferential wall of the inlet tank from the introduced exhaust gas. | 12-22-2011 |
| 20110306453 | METHOD OF MANUFACTURING SPROCKET SEGMENT, AND SPROCKET SEGMENT - A method of manufacturing a sprocket segment that is formed by forging as one of a plurality of circumferentially divided parts of a sprocket having a plurality of teeth arranged on an outer peripheral surface of a circular flange, the method includes: forming a material of the sprocket segment into an initial formed state in an initial forming step; and subjecting the sprocket segment in dies to a finish forming process with a tooth trace direction of the sprocket segment as viewed in cross-section of the sprocket segment being inclined relative to a forging direction of the dies in a finish forming step. | 12-15-2011 |
| 20110293439 | Cooling Fan Driving Device and Fan Rotational Speed Control Method - The invention reduces waste of flow volume of pressurized oil discharged from a hydraulic pump when the rotational speed of a cooling fan is increased to the target rotational speed. The target rotational speed of the cooling fan is set at a target rotational speed setting portion. An acceleration pattern for increasing the cooling fan to the target rotational speed is set at an acceleration pattern setting portion based on the rotational speed of the cooling fan, the target rotational speed set at the target rotational speed setting portion, and magnitude of force due to inertia of the cooling fan and the hydraulic motor. The rotational speed command value calculation portion controls the pressurized oil to be supplied to the hydraulic motor at a flow rate required. Thus, it is possible to reduce wasted relief flow volume. | 12-01-2011 |
| 20110277979 | Heat Exchanger - A radiator as a heat exchanger of the invention includes: an upper tank into which a cooling water flows; a core in which fluid from the upper tank is heat-exchanged; and a lower tank that collects the fluid from the core. A baffle plate is provided inside the upper tank, the baffle plate dividing an inner space into a lower space and an upper space and provided with a communication opening that communicates between the lower space and the upper space. A bent portion bent toward the lower space is provided at each longitudinal end of the baffle plate. | 11-17-2011 |
| 20110276238 | METHOD AND DEVICE FOR CONTROLLING POWER OUTPUT OF ENGINE FOR WORKING MACHINE - An engine control device detects the state of work of a working vehicle such as a construction machine or the like, and controls the power output capacity of an engine automatically. A determination is made as to whether excavation or uphill traveling is being performed, based upon the detection signals from a hydraulic oil pressure detector for a hydraulic cylinder of an arm, detectors for arm and bucket operation commands, a shift operation detector for a transmission, a pitch angle detector for the vehicle body, a traveling acceleration detector, and an accelerator opening degree detector. When the result of this determination is that excavation or uphill traveling is being performed, the engine is controlled to operate at a high power capacity, while at other times it is controlled to operate at a low power output capacity. | 11-10-2011 |
| 20110276237 | LUBRICATING OIL SUPPLY CONTROL DEVICE FOR CONSTRUCTION MACHINE - A lubricating oil supply control device controls a lubricating oil supply amount to a transmission in a construction machine including a torque converter with a lock-up clutch. The lubricating oil supply control device includes a clutch state determining section, a lubricating oil amount detecting section and a lock-up clutch controlling section. The clutch state determining section determines whether or not the lock-up clutch is being coupled. The lubricating oil amount detecting section detects whether or not the lubricating oil supply amount to the transmission is short of a preliminarily set supply amount. The lock-up clutch controlling section decouples the lock-up clutch when the lock-up clutch is being coupled and the lubricating oil supply amount is short of the preliminarily set supply amount. | 11-10-2011 |
| 20110276236 | AUTOMATIC TRANSMISSION SYSTEM FOR BULLDOZER - An automatic transmission system for a bulldozer includes an automatic speed stage shifting section that switches among speed stages depending on a vehicle speed, a speed stage maintaining section that maintains a currently selected speed stage until a predetermined speed stage shifting disobedient time elapses after completion of a speed stage shifting while disobeying a switching instruction from the automatic speed stage shifting section, a load detecting section that detects a vehicle load, and a control restricting section that restricts a control processing of the maintaining section for causing it to obey the shifting section's instruction when the vehicle load is a predetermined load or greater even before the disobedient time elapses. | 11-10-2011 |
| 20110272239 | HYDRAULIC SYSTEM FOR WORKING VEHICLE - A low-pressure pump supplies oil stored in a steering case to a steering device as lubricating oil via a steering lubricating circuit. A high-pressure pump supplies the oil stored in the steering case to a clutch via a high-pressure circuit. A transmission lubricating circuit branches off from the high-pressure circuit via a relief valve and supplies lubricating oil to a transmission device. A transmission-lubricating assist circuit is provided so as to branch off from the steering lubricating circuit and is connected to the transmission lubricating circuit. A transmission case stores the oil used to lubricate the transmission device. A scavenging pump returns the oil stored in the transmission case to the steering device. | 11-10-2011 |
| 20110270497 | Traction Control Device - An object of the invention is to provide a traction control apparatus capable of suitably controlling an error, if it occurs, between an estimation of a vehicle speed and an actual vehicle speed. A traction control apparatus according to the invention includes a vehicle speed estimator and a driving-force controller. The traction control apparatus includes a vehicle state determiner that determines whether the vehicle speed of the construction vehicle estimated by the vehicle speed estimator and the driving-force control by the driving-force controller are balanced, and a driving-force control changer that changes a driving-force control by the driving-force controller when the vehicle state determiner determines the vehicle speed and the driving-force control to be unbalanced. | 11-03-2011 |
| 20110261844 | LASER SYSTEM - The higher efficiency and lower power consumption are realized in a laser system for generating a high-power short-pulse laser beam. The laser system includes a laser oscillator for generating a pulse laser beam by laser oscillation, plural amplifiers for sequentially inputting the pulse laser beam generated by the laser oscillator and amplifying the pulse laser beam, and a control unit for controlling the laser oscillator to perform burst oscillation and halting an amplification operation of at least one of the plural amplifiers in a burst halt period between burst oscillation periods. | 10-27-2011 |
| 20110257861 | Traction Control Device - A traction control device includes: rotation speed detectors provided to wheels; a control-start determiner that determines whether or not to control a braking mechanism and a differential adjusting mechanism based on rotation speeds; a braking mechanism controller that controls the braking mechanism based on a result of the determination of the control-start determiner; and a differential adjusting mechanism controller that controls the differential adjusting mechanism based on the result of the determination of the control-start determiner, in which the control-start determiner includes: a right-left-wheel rotation speed difference calculating section; a front-rear-wheel rotation speed difference calculating section; and a control-start determining section that determines whether or not to start controlling at least one of the braking mechanism and the differential adjusting mechanism when one of rotation speed differences reaches or exceeds a predetermined threshold. | 10-20-2011 |
| 20110257851 | Traction Control Device - A traction control device of a six-wheel drive construction machine, the drive construction machine including: right and left front wheels connected to each other via an axle, right and left center wheels connected to each other via an axle, and right and left rear wheels connected to each other via an axle, the right and left front, center and rear wheels being driven as driving wheels; a braking mechanism provided to each of the wheels; and a differential adjusting mechanism for adjusting a differential between the front and rear driving wheels, the traction control device controls the braking mechanisms only for the driving wheels related to any two of axles while controlling the differential adjusting mechanism. | 10-20-2011 |
| 20110257847 | Vehicle Speed Estimator and Traction Control Device - A vehicle speed estimator includes a unit that selects a minimum rotation speed among rotation speeds of wheels detected by a rotation speed detector and calculates a reference wheel speed of a construction vehicle at every predetermined time. The unit includes: a variable filter processor that performs a low-pass filter processing to the minimum rotation speed, the variable filter processor having a variable time constant; and a time constant changer that changes the time constant of the variable filter processor in accordance with travel conditions of the construction vehicle. | 10-20-2011 |
| 20110251775 | ENGINE OUTPUT CONTROL DEVICE - The gross output power of an engine distributed to at least one main machine and one auxiliary machine. A total load value calculation unit calculates the value of the lost power consumed by the auxiliary machine, and calculates the value of total load power by adding to this lost power value a target value for the main output power of the engine to be distributed to the main machine. A gross output value control unit controls the value of the gross output power so that the value of the gross output power becomes equal to the value of the total load power when the value of the total load power is less than a predetermined threshold value, and so that the value of the gross output power becomes equal to the above described threshold value when the value of the total load power is greater than the threshold value. | 10-13-2011 |
| 20110251762 | Traction Control Device - The invention provides a traction control device capable of preventing a reduction in acceleration. A fraction control device of the invention includes a braking mechanism controller that controls a braking mechanism. The braking mechanism controller includes: a target brake torque calculating section that calculates a target brake torque to each of wheels based on the rotation speed of the wheel and an estimated vehicle speed; a target brake torque determining section that determines whether or not the target brake torque reaches or exceeds a per-stored threshold; a reference wheel determining section that selects a reference wheel used as a reference for controlling the braking mechanism based on the target brake torque to each of the wheels; and a target brake torque reducing section that reduces the target brake torque in accordance with a difference between the target brake torque to the reference wheel and the threshold when the target brake torque to one of the wheels reaches or exceeds the threshold. | 10-13-2011 |
| 20110246031 | Traction Control Device - A fraction control device includes: rotation speed detectors provided to wheels; a control-start determiner that determines whether or not to control a braking mechanism and a differential adjusting mechanism based on rotation speeds; a braking mechanism controller that controls the braking mechanism based on a result of the determination of the control-start determiner; and a differential adjusting mechanism controller that controls the differential adjusting mechanism based on the result of the determination of the control-start determiner, in which the control-start determiner includes: a right-left-wheel rotation speed difference calculating section; a front-rear-wheel rotation speed difference calculating section; and a control-start determining section that determines whether or not to start controlling at least one of the braking mechanism and the differential adjusting mechanism when one of rotation speed differences reaches or exceeds a predetermined threshold. | 10-06-2011 |
| 20110237380 | TRANSMISSION SYSTEM - A sun gear of a first planetary gear train is connected to an input shaft. A carrier | 09-29-2011 |
| 20110237379 | TRANSMISSION SYSTEM - A sun gear of a first planetary gear train is connected to an input shaft. A carrier | 09-29-2011 |
| 20110231070 | METHOD AND DEVICE FOR CONTROLLING POWER OUTPUT OF ENGINE FOR WORKING MACHINE - An engine control device detects the state of work of a working vehicle such as a construction machine or the like, and controls the power output capacity of an engine automatically. A determination is made as to whether excavation or uphill traveling is being performed, based upon the detection signals from a hydraulic oil pressure detector for a hydraulic cylinder of an arm, detectors for arm and bucket operation commands, a shift operation detector for a transmission, a pitch angle detector for the vehicle body, a traveling acceleration detector, and an accelerator opening degree detector. When the result of this determination is that excavation or uphill traveling is being performed, the engine is controlled to operate at a high power capacity, while at other times it is controlled to operate at a low power output capacity. | 09-22-2011 |
| 20110230296 | TRANSMISSION SYSTEM - A sun gear of a first planetary gear train is connected to an input shaft. A carrier | 09-22-2011 |
| 20110230295 | TRANSMISSION SYSTEM - A sun gear of a first planetary gear train is connected to an input shaft. A carrier | 09-22-2011 |
| 20110226087 | ELECTRIC LEVER - An electric lever device includes a detent mechanism | 09-22-2011 |
| 20110221107 | Liquid Sealed Mount - A hydraulic mount includes: a container in which a high-viscosity fluid is liquid-tightly sealed; a rubber mount that is provided on an upper side of the container; a rod that slidably penetrates through the rubber mount; a damper plate that is provided to an end of the rod; a damping force generator that is provided by a clearance between the container and the damper plate; a main fluid chamber that includes an upper fluid chamber and a lower fluid chamber provided by dividing an interior of the container by the damper plate; a volume-variable secondary fluid chamber that communicates with the main fluid chamber; and a pressurizer that generates a differential pressure between the upper fluid chamber and the lower fluid chamber during the movement of the rod. | 09-15-2011 |
| 20110220045 | VARIABLE VALVE DEVICE AND CONTROL METHOD THEREOF - A variable valve device has a hydraulic actuator that implements discharge of operating oil in a pressure chamber and a hydraulic control valve that controls supply and discharge of the operating oil to and from the hydraulic actuator by opening and closing, thereby preventing the closing movement of the intake valve. After a signal that closes the hydraulic control valve in a current engine control cycle is output at a prescribed crank angle, the crank angle of a crankshaft, when surge pressure in the pressure chamber has exceeded a prescribed threshold value resulting from closing of the hydraulic control valve, is determined, and at least either an output crank angle or a waveform of the signal that closes the hydraulic control valve is corrected based on the operation start crank angle, and the corrected signal is output to the hydraulic control valve in a next control cycle. | 09-15-2011 |
| 20110219768 | Air Cleaner, and Engine Control System - An air cleaner includes a case in which an inner cylindrical filter and an outer cylindrical filter are housed, the case having a case body that defines an opening end surface closed by a cover member. The case includes an air inlet provided to an outer circumference of the case body for supplying outside air and an exhaust outlet provided to a bottom of the case body at a downstream side in an air-flowing direction for discharging the air supplied through the air inlet and filtered through the inner cylindrical filter and the outer cylindrical filter. A mass flow rate sensor is provided in the exhaust outlet to measure the flow rate of the air. A flow straightening grid is provided at the upstream side of the mass flow rate sensor to straighten the flow of the air. | 09-15-2011 |
| 20110216800 | TWO-STAGE LASER SYSTEM FOR ALIGNERS - The invention relates to a two-stage laser system well fit for semiconductor aligners, which is reduced in terms of spatial coherence while taking advantage of the high stability, high output efficiency and fine line width of the MOPO mode. The two-stage laser system for aligners comprises an oscillation-stage laser ( | 09-08-2011 |
| 20110214952 | BRAKE DEVICE LUBRICATION DEVICE AND METHOD FOR CONTROLLING SAME - A brake device lubrication device includes a lubricant supply unit and a control unit. The control unit includes a braking timer, a release timer and a storage unit. The control unit is configured to control the lubricant supply unit so as to supply a predetermined first supply amount of lubricant to a brake device when the brake device is in a braking state, to acquire a delay time corresponding to a braking time counted by the braking timer from a relationship of correspondence between the braking time and the delay time stored by the storage unit when the brake device is switched from the braking state to a released state, and to switch a supply amount of lubricant from the first supply amount to a second supply amount which is smaller than the first supply amount when the release time counted by the release timer reaches the acquired delay time. | 09-08-2011 |
| 20110214775 | CYLINDER TUBE, HYDRAULIC CYLINDER WITH SAME, AND METHOD OF MANUFACTURING CYLINDER TUBE - A cylinder tube of a hydraulic cylinder includes a substantially cylindrical outer peripheral wall portion, a port hole, and a plurality of rigidity changing portions. The port hole is formed in a part of the outer peripheral wall portion to communicate with an interior space of the outer peripheral wall portion. The rigidity changing portions are arranged at positions spaced at about 90 degrees leftward and rightward away from the port hole in the circumferential direction as viewed in section, with each of the rigidity changing portions having cross-sectional rigidity larger than a part in proximity to the port hole. | 09-08-2011 |
| 20110214631 | VARIABLE VALVE DEVICE AND METHOD OF CONTROLLING THE SAME - A variable valve device and a method of controlling the variable valve device, wherein, in order to prevent a shortage of oil film in a spool section, only the spool of a solenoid on/off valve is moved at a timing not affecting operation of an air intake valve, to thereby stabilize operation of the solenoid on/off valve. | 09-08-2011 |
| 20110210642 | ARMATURE OF ELECTRIC MOTOR AND METHOD FOR MANUFACTURING ARMATURE OF ELECTRIC MOTOR( amended - A stator is provided with a core and a winding. The core includes a plurality of slots and a plurality of teeth formed between the slots. The winding is composed of a plurality of wires W bundled in an irregular arrangement. The winding includes a plurality of coil portions wound on each of the teeth, and a connecting portion connecting the coil portions together. The winding has a twisted shape in the connecting portion. | 09-01-2011 |
| 20110210641 | ARMATURE OF ELECTRIC MOTOR AND ELECTRIC MOTOR - An armature of an electric motor includes a core and a winding. The core has a plurality of slots and a plurality of teeth formed between the slots. The winding is composed of a plurality of wires. The winding has a plurality of coil parts and connecting portions. The coil parts are inserted into the slots and wound around and across the teeth. The connecting portions connect the coil parts together. The winding has a twisted shape in the connecting portions. | 09-01-2011 |
| 20110202243 | CONTROL DEVICE FOR HYDRAULIC TRANSMISSION VEHICLE - A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission with a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set an upper limit of the engine speed with respect to the set vehicle speed for limiting the upper limit of the engine speed to a predetermined partial engine speed set to be lower than a high idle engine speed when the set vehicle speed is in a preliminarily set low and intermediate speed range, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the set vehicle speed for allowing a vehicle speed to reach the set vehicle speed even when the engine is rotated at the partial engine speed. | 08-18-2011 |
| 20110196585 | CONTROL DEVICE FOR HYDRAULIC TRANSMISSION VEHICLE - A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed. | 08-11-2011 |
| 20110181074 | CAB FOR CONSTRUCTION MACHINE - A cab for a construction machine includes hinges that swingably mount the door to the wall. Each of the hinges includes a first member secured to a first cut-out portion of the wall, a second member secured to a second cut-out portion of the door, an interposed member interposed between the first and second members, and first and second pivot shafts pivotally respectively coupling the first and second members to the interposed member. The cab further includes first and second stoppers that regulate first and second angles of the interposed member with respect to the first and second members, respectively, and a bolt member arranged in the second stopper to move in its axial direction to adjust the second angle. An imaginary surface corresponding to an outermost part of each of the hinges is substantially coplanar with exterior surfaces of the wall and the door, when the door is closed. | 07-28-2011 |
| 20110173962 | Heat Retention/Cooling Control Device for PM Filter Device - Provided is a heat retention/cooling control device for a PM filter device, which controls the temperature of the outer periphery of the PM filter device to ensure an efficient burning in the PM filter device and prevents the influence of heat damage on the periphery of the PM filter device by effectively using moving air. An engine room and a cooling passage which are demarcated by a partition wall are provided in parallel in the front-back direction of an work machine, and an aftercooler, a cooling fan, and a PM filter device are provided in the cooling passage. When the exhaust temperature of exhaust gas is lower than a target temperature when PM is burned, the air volume of the cooling fan is controlled so as to decrease, thereby increasing the exhaust gas temperature. When the exhaust temperature of the exhaust gas is higher than the target temperature, the air volume of the cooling fan is controlled so as to increase, thereby enhancing the effect of cooling the outer periphery of the PM filter device. | 07-21-2011 |
| 20110167811 | ENGINE CONTROL APPARATUS - An engine control apparatus includes a hydraulic pump driven by an engine, a hydraulic actuator to which pressure oil discharged form the hydraulic pump is supplied, an operation lever configured to operate the hydraulic actuators, a detection means detecting operation amounts of operation lever means, an target flow rate calculation unit ( | 07-14-2011 |
| 20110142723 | Exhaust Gas Purifying Device - An exhaust gas purifying device includes: a case body including a plurality of cases, and heat insulating rings and heat insulators that cover the case body over a substantially-entire area from an upstream side to a downstream side in an exhaust gas flowing direction. The heat insulators are placed inward from joint portions between the cases, and the heat insulating rings are placed in such a manner as to bridge over the joint portions between the cases. With the above arrangement, the surface temperature of the case body can be reliably prevented from becoming high. | 06-16-2011 |
| 20110138794 | Exhaust Gas Purifying Device - An exhaust gas purifying device includes: a first case housing a soot filter for purifying exhaust gas; second and third cases that are respectively placed on an upstream side and a downstream side of the first case in an exhaust gas flowing direction; and a differential pressure sensor that detects pressure difference between the upstream side and the downstream side of the soot filter, in which pipes are respectively attached to the first case and one of the second and third cases placed on the upstream side or the downstream side of the first case, the pipes introducing pressures inside the first case and the one of the second and third cases to the differential pressure sensor. For instance, with the pipes having different dimensions, when the first case is erroneously oriented for assembly, the dimensions of the pipes are too short or too long. Accordingly, such an erroneous connection can be avoided. | 06-16-2011 |
| 20110127819 | Operator Seat Structure of Construction Machine - A seat structure for an operator that is set in a cab of a construction machine such as a wheel loader includes: a suspension equipment fixed to a floor frame; a plate-shaped attachment bracket attached on the suspension equipment; a seat and a work equipment console juxtaposed to each other on the attachment bracket. The seat is attached to the attachment bracket via slide rails in a manner slidable back and forth. The work equipment console is also attached to the attachment bracket via a slide rail in a manner slidable back and forth. | 06-02-2011 |
| 20110118083 | MOTOR GRADER - A motor grader includes an engine, a torque converter, a drive wheel, an engine revolution detector, and a control unit. The torque converter, including a lock-up clutch, transmits driving force from the engine. The drive wheel is rotationally driven by the driving force from the engine. The engine revolution detector detects engine revolution. When the lock-up clutch is engaged, the control unit is configured to: maintain the engaged state of the lock-up clutch when the engine revolution is greater than a predetermined lock-up release revolution lower than a low idle revolution; and switch the lock-up clutch into a disengaged state when the engine revolution is less than or equal to the predetermined lock-up release revolution. | 05-19-2011 |
| 20110103099 | SWITCHING CONTROL METHOD OF TRANSFORMER COUPLED BOOSTER - Provided is a switching control method of a transformer coupled booster to suppress an increase in energizing current in a transformer of the transformer coupled booster and downsize the transformer coupled booster. A primary coil current that flows through a primary coil of the transformer, and a secondary coil current that flows through a secondary coil of the transformer are detected. The current difference between the detected primary coil current and the detected secondary coil current is calculated. Based on the calculated current difference, the cycle of ON/OFF periods of four arms provided on the transformer coupled booster is maintained at a constant level. Control is carried out so that the ratio of the first arm's ON period to the OFF period is always equal to the ratio of the third arm's ON period to the OFF period. | 05-05-2011 |
| 20110077821 | Self-Propelled Crushing Machine and Method of Controlling the Same - A mobile crusher includes: a crusher that crushes raw material; a discharge conveyor being disposed on a downstream side of the crusher to discharge the material crushed by the crusher; an engine ( | 03-31-2011 |
| 20110072782 | Exhaust Gas Purifying System for Internal Combustion Engine and Soot Filter Regenerating Method - An exhaust purifying system for an engine includes: a soot filter being provided to a PM filter device to collect PM contained in exhaust gas; a regeneration execution judging unit being provided to a controller to decide whether or not the soot filter should be regenerated; an air cooled aftercooler that cools intake air being supercharged by a turbocharger; a cooling fan that supplies cooling air to the aftercooler and a forced-regeneration fan rotation speed controlling unit being provided to the controller to lower the rotation speed of the cooling fan when the regeneration execution judging unit decides that the soot filter needs to be regenerated. | 03-31-2011 |
| 20110057479 | CAB FOR CONSTRUCTION MACHINE - A cab for a construction machine includes a pillar member and a beam member. The pillar member is disposed generally along a vertical direction, and includes a cutout portion and a protruding portion. The cutout portion is formed on an upper end thereof. The protruding portion is formed on the upper end on an inner side of the cutout portion with respect to a widthwise direction of the cab. The beam member is disposed generally along a direction perpendicular to the vertical direction. The beam member is joined to the pillar member with the beam member partially overlapping the cutout portion on the upper end of the pillar member in a plan view, and a lateral surface of the beam member abutting against the protruding portion. | 03-10-2011 |
| 20110047963 | EXHAUST PROCESSING DEVICE AND MANUFACTURING METHOD THEREOF - An exhaust processing device includes a main body tube portion and a closing tube portion. The main body tube portion includes an opening in an axial end thereof, houses a main body exhaust path in an inside thereof, which allows an exhaust gas to pass therethrough. The closing tube portion includes a plate portion and a tubular portion. The plate portion covers the opening of the axial end of the main body tube portion. The tubular portion radially outwardly protrudes from an outer peripheral surface of the main body tube portion, and is integrated with the plate portion. The tubular portion houses an exhaust path in an inside thereof, which communicates with the main body exhaust path. The tubular portion of the closing tube portion includes a first split half portion integrally molded with the plate portion, and a second split half portion joined to the first split half portion. | 03-03-2011 |
| 20110046858 | WORK VEHICLE AND METHOD FOR CONTROLLING WORK VEHICLE - In this work vehicle, a control unit controls a shift in a speed gear of a transmission according to the vehicle velocity. The control unit determines whether or not the acceleration rate of the vehicle is equal to or less than a predetermined threshold when the vehicle velocity is within a predetermined first range. The control unit switches a lock-up clutch from a not-connected state to a connected state when the acceleration rate of the vehicle is equal to or less than the predetermined threshold. The control unit maintains the lock-up clutch in a not-connected state when the acceleration rate of the vehicle is greater than the predetermined threshold. | 02-24-2011 |
| 20110045113 | DIE CUSHION DEVICE - In the die cushion device, a shock absorber device relieves shock between a cushion pad and a support section. The shock absorber device includes a damping section and an elastic section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section. The elastic section generates reaction force in accordance with the relative displacement of the cushion pad with respect to the support section. The controller section controls a servomotor so that a speed difference between the speed of the slide member and the speed of the support section is set to be a predetermined target speed difference value that changes over time. | 02-24-2011 |
| 20110040459 | WORKING VEHICLE, CONTROL DEVICE FOR WORKING VEHICLE, AND HYDRAULIC OIL AMOUNT CONTROL METHOD FOR WORKING VEHICLE - An object of the present invention is to prevent an unnecessary large amount of hydraulic oil from being supplied to a cylinder when a working vehicle capable of performing both a loading operation and a digging operation is performing the digging operation. | 02-17-2011 |
| 20110040458 | WORKING VEHICLE ENGINE OUTPUT CONTROL SYSTEM AND METHOD - An engine output control system is for a work vehicle composed of an engine, a travel device and a power transmission unit, the power transmission unit including a torque converter and transmitting an output of the engine to the travel device via the torque converter. The engine output control system includes a speed ratio computation portion and an engine output reduction control portion. The speed ratio computation portion is configured and arranged to compute a speed ratio of the torque converter. The engine output reduction control portion is configured and arranged to reduce an output torque of the engine without changing a target speed of the engine when the computed speed ratio is equal to or less than a speed ratio threshold set in advance. The speed ratio threshold is a speed ratio at which a torque ratio of the torque converter is greater than a torque ratio corresponding to a maximum efficiency. | 02-17-2011 |
| 20110029199 | STEERING CONTROL DEVICE AND STEERING CONTROL METHOD FOR WORKING VEHICLE - A stationary steering operation determination means determines whether or not stationary steering operation is being performed repeatedly at a determination cycle period that is set to be longer than a cycle period at which a certain signal is detected. And a stationary steering operation determination means makes a decision as to whether or not stationary steering operation is being performed, on the basis of vehicle speed as detected by a vehicle speed detection means and steering angle as detected by a steering angle detection means. If it has been determined that stationary steering operation is being performed, a steering sensitivity alteration means decreases the steering sensitivity by reducing a pilot pressure or the like. And a notification means notifies the operator that stationary steering operation is being performed. | 02-03-2011 |
| 20110018551 | METHOD AND DEVICE FOR DETERMINING DEGRADATION STATE OF ELECTRICAL STORAGE DEVICE IN HYBRID CONSTRUCTION EQUIPMENT - The degradation of an electrical storage device | 01-27-2011 |
| 20110011356 | Fan Drive Controlling Device and Construction Machine - A fan drive control device includes: a hydraulic motor driving a cooling fan by a hydraulic oil supplied from a hydraulic pump driven by an engine; a flow rate adjuster adjusting a flow rate of the hydraulic oil flowed into the hydraulic motor; a temperature sensor detecting a temperature of a fluid cooled by a cooling fan; an accelerator pedal angle sensor detecting an accelerator pedal angle for controlling an engine power based on a detected value by the temperature sensor; a target flow rate setting unit setting a target flow rate of the hydraulic oil flowed into the hydraulic motor; a target flow rate compensation unit compensating the target flow rate based on a detected value by the accelerator pedal angle sensor; and a control command generator generating a control command to the flow rate adjuster according to the target flow rate by the target flow rate compensation unit. | 01-20-2011 |
| 20110011076 | Operating Oil Supplying Device and Construction Machine - A hydraulic oil supply device includes: a work equipment pump that supplies a hydraulic oil to a hydraulic actuator that drives a work equipment; a fan pump that supplies the hydraulic oil to a hydraulic motor that drives a cooling fan; and a circuit switching valve provided on a hydraulic circuit being branched from a hydraulic circuit connecting the hydraulic actuator with the work equipment pump to be connected to the fan pump, the circuit switching valve selectively connecting a discharge portion of the fan pump to the hydraulic actuator and the hydraulic motor. | 01-20-2011 |
| 20110007480 | CAPACITOR MODULE - A capacitor module is provided with a plurality of capacitor cells each having a capacitor and a capacitor case provided with a first closed-bottomed screw hole with an opening on a bottom surface for housing the capacitor, a metallic cell-fixing body having a through-hole in communication with the first screw hole to which the capacitor cells are fixed by inserting a cell screw in the through-hole and the first screw hole, an insulator made of a thermally conductive insulating material and provided between the capacitor cells and the cell-fixing body for insulating the capacitor cells from the cell fixing body, and a metallic heat-dissipating body having a second closed-bottomed screw hole in which a cell-fixing body screw is inserted and having a flow passage for causing a cooling medium to flow on a rear surface side of a surface on which the second screw hole is provided. | 01-13-2011 |
| 20110001400 | Power Unit - An output shaft and an input shaft are connected with a connection member interposed therebetween, and a motor rotor is provided outside the connection member. Part of oil flowing down from an oil supply opening | 01-06-2011 |
| 20100324788 | METHOD AND DEVICE FOR CONTROLLING POWER OUTPUT OF ENGINE FOR WORKING MACHINE - An engine control device detects the state of work of a working vehicle such as a construction machine or the like, and controls the power output capacity of an engine automatically. A determination is made as to whether excavation or uphill traveling is being performed, based upon the detection signals from a hydraulic oil pressure detector for a hydraulic cylinder of an arm, detectors for arm and bucket operation commands, a shift operation detector for a transmission, a pitch angle detector for the vehicle body, a traveling acceleration detector, and an accelerator opening degree detector. When the result of this determination is that excavation or uphill traveling is being performed, the engine is controlled to operate at a high power capacity, while at other times it is controlled to operate at a low power output capacity. | 12-23-2010 |
| 20100320804 | ROOF PANEL AND CAB WITH THE SAME, AND METHOD OF MANUFACTUING CAB - A roof panel of a cab installed on a work vehicle includes a planar portion and a plurality of bent portions. The planar portion serves as the roof surface of the work vehicle cab. The bent portions are formed on the outer periphery of the planar portion. The bent portions are bent at a predetermined angle with respect to the planar portion toward an external side of the roof surface of the work vehicle cab. | 12-23-2010 |
| 20100320802 | CAB STOPPER DEVICE FOR WORK MACHINE, METHOD FOR FIXING THE CAB STOPPER AND CAB OF WORK MACHINE - A cab stopper device | 12-23-2010 |
| 20100312437 | CONSTRUCTION MACHINE - A construction machine assists loading work and alleviates the burden upon the operator. This construction machine is provided with: a boom lever that can assume a position for commanding raising of a boom, a position for commanding lowering thereof, and a position for commanding a neutral state; a bucket lever that can assume a position for commanding a bucket to be tilted, a position for commanding dumping, and a position for commanding a neutral state; and a controller for detecting the positions of the boom lever and the bucket lever, and for controlling the boom and the bucket according to these detected positions. When the boom lever is set to the position for commanding raising of the boom and the boom is being moved upwards, if the controller detects that a predetermined operation is performed with the boom lever, then the controller causes the bucket to be dumped. | 12-09-2010 |
| 20100307857 | STEERING OPERATION DEVICE - In a steering operation device, a hydraulic actuator is driven by hydraulic pressure and vary the steering angle of the vehicle. A steering valve adjusts the flow rate of oil supplied to the actuator according to a pilot pressure. A pilot valve adjusts the pilot pressure input to the steering valve according to a difference between a displacement of an operation input shaft and a displacement of a feedback input shaft. A joystick lever is linked to the operation input shaft and moves the operation input shaft according to a tilt angle. A drive device displaces the feedback input shaft. A steering angle sensor detects the steering angle and outputs the angle as a detected signal. A controller sends a command signal to the drive device so as to displace the feedback input shaft according to the detected steering angle. | 12-09-2010 |
| 20100292883 | Control device for guided travel of unmanned vehicle - A control device for guided travel of an unmanned vehicle, in which the unmanned vehicle is guided to travel by receiving a signal sent from a GPS satellite by the unmanned vehicle, measuring its own vehicle position based on the signal, and controlling such that a positional shift between the vehicle position and a target point that is a passing point sequentially set on a target traveling course falls into an allowable range for controlling error, wherein a guidable range is set in advance such that a position measurement error is added to the allowable range for controlling error; the position measurement error is obtained based on position measurement accuracy information from the signal; the allowable range for controlling error is changed according to the obtained position measurement error; and control is performed such that the positional shift falls into the changed allowable range for controlling error. | 11-18-2010 |
| 20100290883 | WORK VEHICLE - The work vehicle includes a main body frame, a counterweight, a first beam member, and a first cover member. The counterweight is placed at a rear portion of the main body frame. The counterweight forms a concave portion that is recessed rearwardly from a front surface side of the counterweight and extends to a top surface of the counterweight. The first beam member extends across the concave portion and is attached to both side ends of the counterweight. The first cover member is provided on a top surface of a first frame portion including the first beam member and the concave portion. | 11-18-2010 |
| 20100287926 | HYDRAULIC PUMP/MOTOR AND FAN DRIVING DEVICE - A hydraulic motor | 11-18-2010 |
| 20100281859 | OIL PRESSURE SYSTEM AND VALVE ASSEMBLY USED IN OIL PRESSURE SYSTEM - In the oil pressure system, a control unit sets a flow passage changeover valve to be in a merging state, and sets a relief pressure to a low relief pressure via a relief pressure changeover unit in the case that the rotational speed of the engine is lower than a predetermined threshold level. Also, the control unit sets the flow passage changeover valve to be in a branching state, and sets the relief pressure to a high relief pressure via the relief pressure changeover unit in the case that the rotational speed of the engine is the predetermined threshold level or higher. | 11-11-2010 |
| 20100270856 | CRAWLER-TYPE TRAVEL DEVICE AND ROTATIONAL WHEEL ASSEMBLY - The crawler-type travel device includes a plurality of shoe plates, a first link section, a rotational wheel, and a shaft. The rotational wheel includes a first roller and a second roller. The first roller makes contact with first end portions corresponding to axial outer ends of the first link members forming the first link section. The second roller is aligned with and disposed on the axial inner side of the first roller. The second roller is rotatable independently from the first roller. The second roller makes contact with second end portions corresponding to axial inner ends of the first link members. | 10-28-2010 |
| 20100244554 | RUNNING DEVICE FOR TRACK-LAYING VEHICLE - There is provided a running device for track-laying vehicle, which can resolve a feeling of fear of falling height in a leading end portion of a crawler while relax a large impact when the crawler runs over a raised contact area. The running device includes a spring constant equalizing unit that equalizes an apparent spring constant of a second arm of lower track roller bogie device over a total length. The apparent spring constant is generated in maximum reverse camber of the crawler. The spring constant equalizing unit increases an oscillation angle α of the second arm that can abut on the first arm in the maximum reverse camber of the crawler such that the oscillation angle α of the second arm is larger than a crossing angle β of the connecting link. Desirably the increased maximum oscillation angle of the second arm is 1.3-2.0 times the crossing angle β. | 09-30-2010 |
| 20100236903 | PANEL-CARRYING-OUT APPARATUS - A panel-carrying-out apparatus used for conveying panels ejected from a press machine includes: a semicircular sorting conveyor adapted to be driven switchably in a normal direction or a reverse direction; and a pair of straight conveyors respectively disposed at ends of the sorting conveyor. Each of the panels from the press machine is mounted on the center position of the sorting conveyor in terms of a conveying path. Specifically, an arced conveyor included in the sorting conveyor, on which each of the panels is initially mounted, is adapted to be driven switchably in the normal direction or the reverse direction. | 09-23-2010 |
| 20100236398 | HYDRAULIC PUMP-MOTOR AND METHOD OF PREVENTING PULSATION OF HYDRAULIC PUMP-MOTOR - A pressure regulating restriction for allowing a cylinder bore and a valve plate discharge port to communicate with each other immediately before the cylinder bore communicates with the valve plate discharge port, and an oil passage for allowing the valve plate discharge port and an inside of the cylinder bore to temporarily communicate with each other in a time period after the cylinder bore is freed from the communication with the valve plate suction port until the cylinder bore communicates with the pressure regulating restriction are provided. The oil passage has length capable of transmitting high pressure in the oil passage on a side of the cylinder bore at the time of the communication and of restoring the pressure in the oil passage on the side of the cylinder bore to the pressure on a side of the valve plate discharge port before the communication with a next cylinder bore at the time of non-communication. | 09-23-2010 |
| 20100236229 | FLUID TYPE POWER TRANSMISSION SYSTEM - A fluid type power transmission system includes a fluid type power transmission device and a control part. The fluid type power transmission device includes an inlet part and an outlet part for a working fluid. The fluid type power transmission device is configured to transmit power in response to circulation of the working fluid in the interior thereof. The control part is configured to control a pressure of the working fluid in the inlet part by regulating a pressure of the working fluid in the outlet part of the fluid type power transmission device. | 09-23-2010 |
| 20100235060 | ENGINE CONTROL DEVICE OF CONSTRUCTION MACHINE - An engine control device is adapted to be used for a construction machine equipped with an engine, a hydraulic pump to be driven by the engine, a revolving motor for revolving an upper structure by means of hydraulic oil to be supplied from the hydraulic pump, and a revolving operation lever for executing an operation of revolving the upper structure. The engine control device includes an operation amount detection unit configured to detect an operation amount of the revolving operation lever, and a control unit configured to increase a maximum engine speed when a result of detection by the operation amount detection unit is greater than a predetermined threshold. | 09-16-2010 |
| 20100231371 | Fuel Nature Discriminating System for Working Machines, and Fuel Nature Discriminating Method for Working Machines - The fuel nature discriminating system of the present invention discriminates whether or not a fuel fed to a working machine is the normal one, and performs appropriate control operation by analyzing the result of discrimination. The fuel fed from a fuel supply nozzle flows into a fuel tank through a fuel catching portion. Fuel nature detecting means measures the nature of the fed fuel at a predetermined timing (or at the time of refueling). Measured data generating means generates measured data on the basis of the measurement result and also the remaining amount of fuel and the environmental temperature. And, in accordance with the result of analysis of the measured data, a measured data analyzing means executes restriction of the engine output, issues a warning to the user, and alteration of an evaluation of the user. | 09-16-2010 |
| 20100229782 | Moving Object Monitoring Device and Moving Object Monitoring System - The present invention is provided to suppress an increase of communication cost, immediately detect theft and illegal use of a moving object, and immediately deal with the theft and illegal use. A moving object monitoring device | 09-16-2010 |
| 20100212641 | ENGINE FUEL SUPPLY SYSTEM - An engine fuel supply system is provided at a reduced cost by using a HC dosing pump that supplies fuel into an exhaust pipe also as a pump for a cylinder fuel supply device. When a signal is generated to command air removal from a cylinder fuel supply passage, the dual-purpose pump is activated, a first on-off valve assumes an open state, and a second on-off valve assumes a close state, so that the fuel is supplied from the dual-purpose pump to the cylinder fuel supply passage via an air-removal fuel supply passage. When a signal is generated to command fuel supply into the exhaust pipe, the dual-purpose pump is activated, the second on-off valve assumes the open state, and the first on-off valve assumes the close state, so that the fuel is supplied from the dual-purpose pump to the exhaust pipe via the exhaust-pipe fuel supply passage. | 08-26-2010 |
| 20100212450 | RIPPER OPERATING DEVICE - A ripper operating device is configured to perform operations of a ripper of a work vehicle. The ripper operating device includes a support portion, an operating lever, and an operating switch part. The operating lever is supported by the support portion to be movable with respect to the support portion in a first direction to perform a first operation and non-movable in a second direction. The first direction intersects a front-and-rear direction at an intersection point corresponding to a neutral position of the operating lever to form an acute angle with the front-and-rear direction on a rearward-outward side of the intersection point. The second direction is substantially perpendicular to the first direction and substantially matches with a direction in which a forearm of an operator extends when operating the ripper. The operating switch part is arranged on the operating lever to perform a second operation other than the first operation. | 08-26-2010 |
| 20100200194 | COOLING DEVICE AND CONSTRUCTION MACHINE OR WORKING MACHINE EQUIPPED WITH THE SAME - A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan; and an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of the cooling fan is positioned at a further downstream position than the air-flow-direction downstream side end of the inner circumferential wall. A ratio between a length of the outer circumferential wall and a length of the inner circumferential wall in the air flow direction is 1.07 or more and 1.81 or less, and a width between the outer circumferential wall and the inner circumferential wall is 15 mm or more and 55 mm or less. | 08-12-2010 |
| 20100200193 | COOLING DEVICE AND CONSTRUCTION MACHINE OR WORKING MACHINE EQUIPPED WITH THE SAME - A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; and a ring having an inner circumferential wall and an outer circumferential wall. The inner circumferential wall is provided on the shroud and adjacent to an outer circumference of the cooling fan. The outer circumferential wall surrounds the inner circumferential wall, and an air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan is positioned at a further downstream position in the air flow direction than the air-flow-direction downstream side end of the inner circumferential wall. | 08-12-2010 |
| 20100198472 | WORK VEHICLE AND METHOD FOR CONTROLLING WORK VEHICLE - The work vehicle includes a braking device, a lubricant feeding section, and a controlling section. The controlling section configured to execute a first control in which an amount of the lubricant fed to the braking device is controlled based on a temperature of a rotating member of the braking device. The controlling section sets the amount of the lubricant to a predetermined first feed amount when the braking device is in a braking state, calculates the temperature of the rotating member, and makes a decision in the first control, based on the calculated temperature of the rotating member, to change the amount of the lubricant from the first feed amount to a second feed amount, which is smaller than the first feed amount, when the braking device is switched from the braking state to a non-braking state. | 08-05-2010 |
| 20100187860 | CAB AND CONSTRUCTION MACHINE - A cab includes left and right rear pole members having internal spaces and prescribed shapes in cross-section. The right rear pole member includes a first hole portion that extends along the longitudinal direction of the right rear pole member and penetrates the right rear pole member in the left-and-right direction of the right rear pole member, and a first plate-shaped member inserted into and secured in the first hole portion. | 07-29-2010 |
| 20100186925 | RADIATOR - A radiator includes a heat exchanger, an upper auxiliary tank, a lower auxiliary tank, an upper main tank and a lower main tank. The upper auxiliary tank is mounted on an upper surface of the heat exchanger. The lower auxiliary tank is mounted on a lower surface of the heat exchanger. The upper main tank is arranged at the substantially same height as the upper auxiliary tank and at an offset position relative to the upper auxiliary tank in the plan view. The upper main tank is connected to the upper auxiliary tank via a coolant water conduit pipe, and has a coolant water inlet on a lower surface thereof. The lower main tank is arranged under the upper main tank at an offset position relative to the upper main tank in the plan view, and is connected to the lower auxiliary tank. | 07-29-2010 |
| 20100186713 | ENGINE CONTROL APPARATUS - An engine control apparatus includes an engine target speed set unit 51 setting a first target speed through a throttle dial, a relief engine maximum speed calculation unit 52 calculating a second target speed limiting a maximum target speed in a relief operation according to a load pressure of a hydraulic pump, a speed control means controlling an engine speed such that the engine speed is equal to lower one of the first target speed and the second target speed, a determination means determining whether an engine torque assist action of a generator motor is performed, based on a deviation between an target speed and a real speed of the engine. When the determination means determines that the engine torque assist action is performed, the speed control means controls the engine speed to be equal to the target speed through the engine torque assist action of the generator motor. | 07-29-2010 |
| 20100184554 | PLANETARY GEAR TYPE GEARBOX - A planetary gear type gearbox includes a front-stage transmission section and rear-stage transmission section. The front-stage transmission section is for transmitting power from an input shaft to an intermediate shaft. The front-stage transmission section includes first, second and third clutches, two sets of planetary gear trains axially adjoining to each other. The first planetary gear train includes a sun gear, a carrier, a ring gear and planet gears. The second planetary gear train includes a sun gear, a carrier, a ring gear and two sets of planet gears. In the activation of second and third clutches, power is inputted into the carrier from the input shaft and is then outputted from the ring gear of the first planetary gear train. | 07-22-2010 |
| 20100181498 | Differential evacuation system - [Technical Problem] To provide a differential evacuation system capable of easily maintaining, at a low cost, a large differential pressure between a light generation chamber and an illumination optical chamber in which optical processing, e.g. exposure, is performed by using extreme ultraviolet (EUV) light generated in the light generation chamber, and yet capable of sufficiently ensuring a desired optical path. | 07-22-2010 |
| 20100176624 | OPERATOR'S CAB SUPPORTING APPARATUS OF WORK MACHINE - A rear limiting mechanism ( | 07-15-2010 |
| 20100174454 | DRIVING FORCE CONTROLLER AND DRIVING FORCE CONTROL METHOD OF WORKING VEHICLE - Problems of work efficiency reduction by tire slip; durability reduction by tire damage; and large tire-changing costs for users are solved by preventing repeated tire slip occurrence in situations where tire slip likely occurs such as during excavation. A working vehicle of this invention has a work equipment, and an engine power is transmitted as driving force to the tires via a driving force transmission path. Driving force variation means for freely varying the driving force transmitted to the tires is provided in the transmission path of the working vehicle. Tire slip detection means detects tire slip occurrence. When the tire slip detection means detects tire slip, driving force measurement means measures the driving force at the time of tire slip detection. Driving force control means controls the driving force variation means such that the driving force becomes smaller than that at the time of tire slip detection. | 07-08-2010 |
| 20100174438 | Failure countermeasure supporting system for mobile vehicle - A failure countermeasure support system for efficiently determining upon countermeasures to be executed for remedying a failure of a construction machine, based upon information about the failure. There are provided: a plurality of maintenance databases | 07-08-2010 |
| 20100167873 | Engine Control Device, And Its Control Method - A first target engine speed Nh and a high-speed control field F | 07-01-2010 |
| 20100156144 | CAB FOR CONSTRUCTION MACHINE, AND CONSTRUCTION MACHINE AND MOTOR GRADER EACH HAVING THE CAB MOUNTED THEREON - A cab for a construction machine, a construction machine, and a motor grader are described. The construction machine and the motor grader each have the cab mounted thereon. The cab includes a floor and a roof, each having a respective front side having corresponding left and right ends, which are diagonally cut forward. A front window is provided on a front surface of the cab is formed in a trapezoidal shape. Upper and lower window frames are disposed along both the left and right ends of the floor and the roof. Frames are also disposed on front sides of side window frames along both left and right side window frames of the front window. When mounted on a construction machine or motor grader used for road surface and ground operations, the cab increases visibility of the area to be operated upon, specifically, visibility in the forward view. | 06-24-2010 |
| 20100144489 | DEVICE AND METHOD FOR TRANSMITTING ENGINE POWER - An engine power transmission device for improving the acceleration performance of an engine connected to a torque converter of construction machinery in accelerating from standstill, wherein a clutch ( | 06-10-2010 |
| 20100133020 | FINAL DRIVE UNIT, CONSTRUCTION MACHINE EQUIPPED WITH THE SAME, AND METHOD OF WINDING CRAWLER BELT - A final drive unit includes a sprocket, a hub unit and a holding portion. The hub unit is arranged inside the sprocket and includes a hub portion and a cover member mounted to the hub portion. At least the hub portion is configured and arranged to rotate about a rotational axis together with the sprocket. The holding portion is arranged on one of the hub portion and the cover member of the hub unit in proximity to an outer end of the one of the hub portion and the cover member with respect to an axial direction of the rotational axis. The holding portion is configured and arranged to hold an end of a wire-shaped member that pulls a crawler belt when the crawler belt is wound around the sprocket. | 06-03-2010 |
| 20100131163 | HYDRAULIC VEHICLE - A hydraulic vehicle provided with a running-system hydraulic unit | 05-27-2010 |
| 20100131158 | WORKING VEHICLE, AND HYDRAULIC FLUID AMOUNT CONTROL METHOD FOR WORKING VEHICLE - A working vehicle has improved operability and working efficiency during loading. A loading operation detector detects the start of a loading operation based on at least two of the following: whether a boom lever has been operated in its raise direction; whether a boom is in an attitude set in advance; whether the boom angle is less than an upper limit; whether a speed ratio when a brake is OFF is greater than or equal to a predetermined value; whether a predetermined speed stage is set; whether the traveling range has been changed from reverse to forward; and whether the angular velocity of the boom is greater than or equal to a predetermined value. By increasing the discharge amount of a loader pump, and/or by supplying hydraulic fluid to a boom cylinder from a switch pump, a hydraulic fluid amount increase controller supplies more hydraulic fluid to the boom. | 05-27-2010 |
| 20100119344 | WORK EQUIPMENT BOOM - A work equipment boom is adapted to be attached at one end to a main body of a construction machine and attached at the other end to a work equipment arm, the work equipment boom includes a boom main component. The boom main component is integrally formed by expanding a tubular material. The boom main component has a proximal end portion and a distal end portion. The proximal end portion includes a first end part arranged to be disposed adjacent to the main body and has a shape which increases in horizontal width as it gets nearer to the first end part. The distal end portion includes a second end part arranged to be disposed adjacent to the work equipment arm and has a shape which increases in horizontal width as it gets nearer to the second end part. | 05-13-2010 |
| 20100117275 | DAMPING DEVICE - A vibration isolator includes layered rubbers interposed between a support body and a movable body, and a pair of dampers attached to the support body at one ends and to the movable body at the other ends. The layered rubbers are arranged to be spaced apart in an anterior and posterior direction and in a left and right direction, with reference to a direction in which an operator faces when seated. One of the dampers is arranged at a position corresponding to a middle of the left and right direction between the layered rubbers arranged in the left and right direction, and aligned in the anterior and posterior direction. The other one of the dampers is arranged closer to an anterior side than a middle of the anterior and posterior direction between the layered rubbers arranged in the anterior and posterior direction, and aligned in the lift and right direction. | 05-13-2010 |
| 20100108431 | STEERING SYSTEM - A steering system that with a directional control valve | 05-06-2010 |
| 20100107996 | WORK VEHICLE AND CONTROL METHOD FOR WORK VEHICLE - A work vehicle is provided with an engine, a traveling device driven by driving force from the engine to cause the work vehicle to travel, a first hydraulic pump driven by the driving force from the engine to discharge hydraulic oil, and a cooling device having a cooling fan driven by the hydraulic oil supplied by the first hydraulic pump to cool the engine, and a control unit. The control unit performs a normal cooling control in which an upper limit fan speed is determined based on an engine speed, and a cooling suppression control in which the upper limit fan speed determined based on the engine speed is suppressed to be less than the upper limit fan speed during the normal cooling control when a predetermined operation required to increase the engine speed is performed. | 05-06-2010 |
| 20100094515 | CONSTRUCTION VEHICLE - In the construction vehicle, a controller is configured to implement a displacement rapid change suppression control for controlling the displacement of a travel hydraulic pump so that travel circuit oil pressure reaches a maximum value equal to or less than a cutoff pressure value when the vehicle has stopped regardless of engine speed, and the displacement of the travel hydraulic pump gradually increases as the travel circuit oil pressure decreases from the maximum value. | 04-15-2010 |
| 20100090628 | GENERATOR MOTOR DRIVING DEVICE AND METHOD FOR DISCHARGING CHARGES FROM CAPACITOR OF GENERATOR MOTOR DRIVING DEVICE - The present invention provides a generator motor driving device that can promptly perform discharging of charges from the capacitor during a maintenance operation, and a capacitor discharge method to be implemented in the generator motor driving device. Power is supplied from the capacitor to the generator motor being driven by the engine, and the generator motor is driven, with the engine as a load. Rated constant current control is performed on the generator motor, and rated constant voltage control is performed on the booster, until the capacitor voltage decreases to a first voltage. After the capacitor voltage decreases to the first voltage, the rated constant current control is performed on the generator motor, and voltage control is performed on the booster to maintain a predetermined ratio between the capacitor voltage and the booster output voltage to be output to the driver, until the capacitor voltage decreases to a second voltage that is lower than the first voltage. | 04-15-2010 |
| 20100076640 | TRAVEL ROUTE GENERATING METHOD FOR UNMANNED VEHICLE - A travel route generating method for an unmanned vehicle, which includes a condition input step of inputting a vehicle constraint condition including a vehicle width and a minimum turning radius of the unmanned vehicle, and a geometrical constraint condition including a travel route generation range in which the unmanned vehicle is to travel, an obstacle to avoid, and a position and a direction of an entrance point and an exit point; and a travel route generating step of generating a travel route such that the vehicle constraint condition and the geometrical constraint condition are satisfied, and such that a function value of a cost function having at least a magnitude of a curve and/or a rate of change in the curve as a cost element is minimized. | 03-25-2010 |
| 20100071973 | METHOD OF CONTROLLING HYBRID CONSTRUCTION MACHINE AND HYBRID CONSTRUCTION MACHINE - A method of controlling a hybrid construction machine capable of preventing a system from being rendered inoperative without increasing a capacitance of a capacitor and of inhibiting delay of a swing operation relative to an operation command at the time of swing operation, and the hybrid construction machine are provided. For this purpose, at the time of discharge of the capacitor, actual torque command values are respectively generated by referring to an assist torque limit value corresponding to capacitor voltage of a generator motor and a swing power running torque limit value corresponding to the capacitor voltage of a swing motor, as well as, at the time of charge of the capacitor, an actual target output value of the generator motor is generated. | 03-25-2010 |
| 20100071359 | HYDRAULIC DEVICE AND WORK MACHINE - A hydraulic device has a first pump, a second pump, an operating state detector configured and arranged to detect an operating state, a connection switching unit configured and arranged to selectively connect the second pump to either a first hydraulic oil line or a second hydraulic oil line, and a switching controller configured to control, based on the operating state detected by the operating state detector, a switching operation of the connection switching unit The switching controller is further configured to inhibit the switching operation of the connection of the second pump when the detected operating state is such that at least one of clutches of a multi-stage transmission and a steering device is in a state transition or at least one brake of the steering device is being operated. | 03-25-2010 |
| 20100070146 | ENGINE LOAD CONTROL DEVICE OF WORK VEHICLE - In an engine load control device of a work vehicle, an output of an engine is transmitted to a hydraulic actuator via a variable displacement type hydraulic pump. A controller is configured to calculate, based on a target rotational speed of the engine detected by a target rotational speed detecting portion and an actual rotational speed of the engine detected by an actual rotational speed detecting portion, a variation rate per unit time of a difference between the detected results, and to adjust the maximum absorbing torque of the hydraulic pump according to the magnitude of the variation rate. | 03-18-2010 |
| 20100069198 | CONSTRUCTION VEHICLE - A construction vehicle includes a control unit configured to shift gear after performing pre-shifting to couple a target speed-change gear that corresponds to a target speed with a target speed-change shaft in non-transmitting state of rotation of the input shaft when the gear shift is performed from a current speed to the target speed, in a state in which the current speed gear that corresponds to the current speed step and the current speed-change shaft that corresponds to the current speed gear are coupled. When the vehicle speed detected by the vehicle speed detecting section is zero, the control unit is configured to perform pre-shift auxiliary control prior to the pre-shifting control to input the rotation of the input shaft to the target speed-change shaft in a state in which the target speed-change shaft is not coupled to the plurality of speed-change gears. | 03-18-2010 |
| 20100064991 | CONTROL DEVICE FOR COOLING FAN FOR VEHICLE - A cooling-fan control device for a vehicle that increases the cooling capacity of a cooling oil that cools a brake rapidly and inhibits a brake damage in a case where the brake is applied during traveling or, in addition to the above-described problem-to-be-resolved, suppresses engine horsepower consumption and avoids consumption increase, while increasing the cooling capacity of the brake cooling oil. The rotation speed of the cooling fan is controlled to obtain the higher target rotation speed of a first target rotation speed corresponding to a detected cooling oil temperature and a second target rotation speed corresponding to a detected brake operation amount. The present invention is applicable to a vehicle in which an engine power is distributed to a travel power train and a hydraulic pump, drive wheels are operated via the travel power train, and the cooling fan is actuated via the hydraulic pump. | 03-18-2010 |
| 20100064684 | VARIABLE TURBO SUPERCHARGER AND METHOD OF RETURNING OIL FROM HYDRAULIC DRIVE - Provided are a variable geometry turbocharger in which a drain pipe from a hydraulic servo drive device can be omitted and in which a member for transmitting power of the hydraulic servo drive device can be efficiently lubricated, and a method of returning oil from the hydraulic servo drive device. The variable geometry turbocharger includes a slide mechanism for changing an opening degree of a nozzle, the hydraulic servo drive device for driving the slide mechanism by hydraulic pressure, and drain flow paths for delivering oil exhausted from the hydraulic servo drive device into an oil return chamber adjacent to a turbocharger body. | 03-18-2010 |
| 20100064677 | WORK MACHINE - A work machine includes: hydraulic actuators | 03-18-2010 |
| 20100060243 | Capacitor Module - The capacitor module includes a capacitor, in which a screw hole is arranged on an outer bottom wall surface of a capacitor case housing a capacitor element, and a heat dissipater, on which a plurality of capacitor cases are fixated by screwing fixation screws in the screw holes of the capacitors. As a result, for example, the capacitor can be fixated with reliability and durability secured even under a condition where very strong vibration is continuously applied, for example, when the capacitor module is mounted on construction machinery. Further, because, an adherence of the outer bottom wall surface of the capacitor case on a fixation surface of the heat dissipater is strengthened by screwing the fixation screw in the screw hole, the capacitor can be cooled down by transferring heat produced by the capacitor to the heat dissipater as needed. | 03-11-2010 |
| 20100044060 | MOTOR GRADER - In a motor grader, when a cylinder hydraulic pressure detected by a cylinder-hydraulic-pressure-detecting section is less than a predetermined threshold value, a control section makes a determination that the motor grader is in a running state and uses a running-hydraulic-pressure waveform corresponding to the running state to control the hydraulic pressure supplied to a clutch. When the cylinder hydraulic pressure is greater than or equal to the threshold value, the control section makes a determination that the motor grader is in a working state and uses a working-hydraulic-pressure waveform corresponding to the working state to control the hydraulic pressure supplied to the clutch. | 02-25-2010 |
| 20100043596 | TRANSMISSION FOR INDUSTRIAL VEHICLE - A transmission for an industrial vehicle has an input shaft, first and second transmission mechanisms, a clutch mechanism, a rotation direction switching gear train, a speed change gear train, and an output shaft. The first and second transmission mechanisms change the speed among a plurality of speeds of rotation from the input shaft. The clutch mechanism is disposed on the input side of the transmission mechanisms and includes forward and reverse clutches and first and second snap clutches for selecting which of the first and second transmission mechanisms will receive rotational input from the engine. The rotation direction switching gear train inputs rotations for forward and reverse travel to the forward and reverse clutches. The speed change gear train inputs to the first snap clutch and the second snap clutch the output from the forward clutch and the reverse clutch. | 02-25-2010 |
| 20100043563 | DIFFERENTIAL PRESSURE SENSOR - In order to reduce hysteresis and other noise components included in the output signal characteristic of a differential pressure sensor, an elastic reaction member which operates together with a diaphragm provided in a chamber of the differential pressure sensor includes a contact portion which contacts the diaphragm, and a plurality of springs which are arranged symmetrically about the contact portion. Each of the springs is a plate shaped or linear shaped spring which is bent into the form of a letter C, U, J, or V, and has one of its ends fixed to a wall which defines the chamber, while its other end is connected to the contact portion. When the contact portion shifts together with the diaphragm, the deformations of the plurality of springs are mutually balanced, so that rotation and horizontal deviation of the contact portion with respect to the diaphragm is suppressed. | 02-25-2010 |
| 20100031650 | CONSTRUCTION MACHINE AND METHOD OF CONTROLLING CONSTRUCTION MACHINE - The present invention provides a construction machine where overheating of mounted electric devices can be prevented properly with a simple structure and a method of controlling the construction machine. For this purpose, a pump target discharge flow rate of a hydraulic pump is calculated based on an operated amount of an operating unit, a temperature of an electric device mounted on the construction machine is detected, an engine minimum speed, which is a minimum possible speed of an engine in carrying out low-speed matching for matching output of the engine and pump absorbing horsepower of the hydraulic pump to each other in a low-speed region where speed of the engine is lower than set speed, is calculated by using the detected temperature of the electric device, and a maximum value out of a corresponding speed of the pump target discharge flow rate and the engine minimum speed is generated as a candidate for an engine target speed. | 02-11-2010 |
| 20100025231 | Method for cleaning optical element of EUV light source device and optical element cleaning device - A method for cleaning an optical element of an extreme ultraviolet light source device for removing, from the optical element in a chamber, scattered matter generated together with extreme ultraviolet light by plasma formed through laser beam excitation of a target in the chamber, the method which comprises: making the scattered matter generated by the plasma no larger than nanosize by using solid tin as the target and using a CO | 02-04-2010 |
| 20100025223 | Extreme Ultraviolet Light Source Device - Offset in the ejection direction of target material droplets is corrected in order to stabilize EUV output in an EUV light source device. An extreme ultraviolet light source device includes a droplet generation device | 02-04-2010 |
| 20100018336 | TRANSMISSION FOR INDUSTRIAL VEHICLE - A transmission for an industrial vehicle has an input shaft; first and second transmission mechanisms, each having a plurality of speed-change steps; a second transmission mechanism; a clutch mechanism; a rotation direction switching mechanism; and an output shaft. The clutch mechanism is disposed on the input side of the first and second transmission mechanisms and is provided with a forward clutch and a reverse clutch for switching between forward and reverse travel, and is further provided with first and second snap clutches for selecting which of the first and second transmission mechanisms will receive rotational input from the engine. The rotation direction switching mechanism is a mechanism for switching the direction of rotation inputted to the first transmission mechanism or the second transmission mechanism to the direction of rotation for forward travel or the direction of rotation for reverse travel in accordance with the switching of forward and reverse travel. | 01-28-2010 |
| 20100014323 | VOLTAGE CONTROL DEVICE AND VOLTAGE CONTROL METHOD - A voltage control device and a voltage control method capable of improving efficiency of a system as a whole even when fluctuation in voltage of a capacitor, which is a storage battery, is large are provided. A capacitor for supplying electric power to a predetermined load, an inverter connected to the load, an AC-coupling bi-directional DC-DC converter including two voltage source inverters of which direct-current terminals are connected in series so as to have additive polarity and a transformer for AC-coupling alternating-current terminals of the two voltage source inverters and having a predetermined leak inductance, with one of the two voltage source inverters connected in parallel to a capacitor, for outputting direct-current voltage obtained by increasing capacitor voltage of the capacitor to the inverter, and control unit for generating a command value of the direct-current voltage based on efficiency of the AC-coupling bi-directional DC-DC converter having a value corresponding to the capacitor voltage to output, are provided. | 01-21-2010 |
| 20100009806 | CONSTRUCTION VEHICLE - A construction vehicle includes an engine, a hydraulic pump driven by the engine, a travel hydraulic motor driven by pressure oil discharged from the hydraulic pump, travel wheels driven by the drive force of the travel hydraulic motor, and a controller. The controller is configured to control an engine speed, displacement of the hydraulic pump, and displacement of the travel hydraulic motor in order to control a vehicle speed and the traction force. The controller is further configured to increase a maximum displacement of the travel hydraulic motor as the vehicle speed decreases within a low speed range in which the vehicle speed is equal to or less than a predetermined threshold. | 01-14-2010 |
| 20090320461 | CONTROL DEVICE OF ENGINE, CONTROL DEVICE OF ENGINE AND HYDRAULIC PUMP, AND CONTROL DEVICE OF ENGINE, HYDRAULIC PUMP, AND GENERATOR MOTOR - An object of the present invention is to operate the working machine etc. with satisfactory responsiveness as intended by the operator while enhancing engine efficiency, pump efficiency, and the like, where a first engine target revolution ncom | 12-31-2009 |
| 20090314911 | CAB SUPPORTING APPARATUS OF WORK MACHINE - A cab frame ( | 12-24-2009 |
| 20090314693 | SELF-PROPELLED CRUSHING MACHINE - A self-propelled crushing machine is provided which ensures that, even when crushed pieces of an object include a concrete reinforcing steel bar or other like material piece, it is prevented that the concrete reinforcing steel bar will pierce into a conveyor belt. To this end, the crushing machine has a memory for storing a relationship in belt velocity between a conveyor belt and a magnetic separator belt which relationship allows a concrete reinforcing steel bar attracted and adhered to the magnetic separator belt to be taken off from the conveyor belt before the trailing end of the concrete reinforcing steel bar travels past a leading end attraction/adhesion position at which the leading end of the concrete reinforcing steel bar is to be attracted and adhered to the magnetic separator belt. In addition, the crushing machine also includes a controller configured to provide respective control currents to a conveyor belt drive means and a magnetic separator belt drive means, based on the belt velocity relationship stored in the memory. | 12-24-2009 |
| 20090308675 | GENERATOR DRIVING DEVICE, HYBRID VEHICLE, AND CONTROL METHOD FOR GENERATOR DRIVING DEVICE - In order to securely prevent, even where a boosting unit is provided, a rush current from arising when a contactor is turned on during a transient state, the voltage of a surge absorbing condenser is controlled so that the voltage difference between the power source capacitor and surge absorbing condenser falls in a predetermined range. The control is performed in the following manner: of the two voltage source inverters of the AC-coupled bi-directional DC-DC converter composing a voltage converter as a boosting unit, only the one that is not connected in parallel with a power source capacitor is activated to perform a chopping operation while the generator is operated with the contactor off. | 12-17-2009 |
| 20090303466 | APPARATUS FOR DETECTING PROPRETIES OF FUEL FOR WORKING MACHINE - An apparatus for detecting a property of fuel detects the property of fuel at the time of fuel supply. A measuring chamber member is provided to a fuel tank. The greater portion of fuel supplied from a fuel supply nozzle falls down from a fuel supply aperture via a flow outlet into the fuel tank. However, a part of the fuel remains in a measuring space defined between a portion below the flow outlet and a bottom portion. A fuel property detection sensor is fitted to a main body so as to oppose the measuring space. When application of a cap to the fuel supply aperture has been detected by a fuel supply cap sensor, if increase of the remaining fuel amount has been detected by a remaining fuel amount sensor, or if the engine is started, a controller measures the property of the fuel with the fuel property detection sensor. | 12-10-2009 |
| 20090302720 | Generator/motor mounted on engine - A generator/motor includes a ring-shaped stator core ( | 12-10-2009 |
| 20090302141 | MOBILE CRUSHER - A mobile crusher includes: a crusher having a fixed jaw and a swing jaw and adjusting an outlet gap between lower ends of the fixed jaw and the swing jaw, the crusher crushing raw materials by swing movement of the swing jaw toward the fixed jaw and discharging the raw materials crushed by the crusher from the outlet gap to produce crushed materials; a work implement disposed on an upper stream or a lower stream of the crusher to produce the crushed materials; and a controller that controls a work implement speed of the work implement depending on the outlet gap. | 12-10-2009 |
| 20090301517 | METHOD AND APPARATUS FOR CLEANING COLLECTOR MIRROR IN EUV LIGHT GENERATOR - A method for cleaning collector mirrors in an EUV light generator in which a target is made into a plasma state and EUV light generated is collected by a collector mirror, the method being adopted to the EUV light generator for cleaning contaminants adhering thereto, the method comprising: preparing at least two collector mirrors; locating one of the mirrors at an EUV light condensing position while locating the other mirror at a cleaning position; determining whether the mirror at the cleaning position is cleaned while determining whether the mirror at the light condensing position requires cleaning; and once determined that the mirror at the cleaning position is cleaned and the mirror at the light condensing position requires cleaning, conveying the mirror at the light condensing position and requiring cleaning to the cleaning position while conveying the mirror at the cleaning position and having been cleaned to the light condensing position. | 12-10-2009 |
| 20090301075 | Control Apparatus for Work Machine - A speed of a hydraulic actuator is matched with that of an electric actuator when the hydraulic actuator and the electric actuator are concurrently actuated. When determination units ( | 12-10-2009 |
| 20090299562 | Guided control device for unmanned vehicle - Guiding speed is increased while an unmanned vehicle is prevented from straying from a travel passage width, to improve the work efficiency. Target speed of the unmanned vehicle increases as a distance between a current position of the unmanned vehicle and a guidable borderline increases, and the target speed of the unmanned vehicle decreases as the distance between the current position of the unmanned vehicle and a guidable borderline decreases. The unmanned vehicle travels, along a travel path having adjacent inbound/outbound lanes, in a direction opposite to a direction of a vehicle on an oncoming lane. If it is determined that the vehicle traveling along the oncoming lane is approaching the unmanned vehicle, then the target speed of the unmanned vehicle is reduced, whereby the unmanned vehicle is caused to travel at a low guiding speed. | 12-03-2009 |
| 20090294560 | Mobile crusher - A mobile crusher includes: a crusher for crushing raw materials; a discharge conveyor provided on a lower stream of the crusher for discharging the raw materials crushed by the crusher; a work implement provided on an upper stream of the crusher for producing the crushed materials; a conveyor sensor and conveyor pressure comparing unit for determining whether the crushed materials to be discharged are fed on the discharge conveyor or not; a crusher pressure sensor and crusher pressure comparing unit for determining whether the raw materials are present in the crusher or not; and a flow rate controller for controlling the speeds of the crusher, discharge conveyor and work implement based on determination results of the conveyor pressure sensor, conveyor pressure comparing unit, crusher pressure sensor and crusher pressure comparing unit. | 12-03-2009 |
| 20090290996 | Bent Axis Type Variable Displacement Pump/Motor - The present invention relates to an improvement of an bent axis type variable displacement pump/motor in which a piston moves reciprocatingly inside a cylinder and a state in which three parties of a cylinder block, a valve plate member, and a case are always in close contact with each other is secured by configuring the valve plate member with a plurality of valve plate parts comprising a first valve plate part and a second valve plate part and placing the valve plate member between a block side sliding surface of a cylinder block and a concave guide surface of the case while the plurality of valve plate parts are slidably brought into close contact with each other via sliding contact surfaces. | 11-26-2009 |
| 20090289205 | MIRROR FOR EXTREME ULTRA VIOLET, MANUFACTURING METHOD FOR MIRROR FOR EXTREME ULTRA VIOLET, AND FAR ULTRAVIOLET LIGHT SOURCE DEVICE - The EUV light source device eliminates radiation other than EUV radiation from the light which it emits, and supplies only the EUV radiation to an exposure device. A composite layer consisting of a plurality of Mo/Si pair layers is provided upon the front surface of an EUV collector mirror, and blazed grooves are formed in this composite layer. Radiation emitted from a plasma is incident upon this EUV collector mirror, and is reflected or diffracted. The reflected EUV radiation (including diffracted EUV) proceeds towards an intermediate focal point IF. The radiation of other wavelengths proceeds towards some position other than this focal point IF, because its reflection angle or diffraction angle is different. A SPF shield having an aperture portion is provided at the focal point IF. Accordingly, only the EUV radiation passes through the aperture portion and is supplied to the exposure device, while the other radiation is intercepted by the shield. | 11-26-2009 |
| 20090284045 | TILT LOCK STRUCTURE OF DRIVER'S CABIN - A first engaging hole and a second engaging hole are formed in a fan-shaped standing portion which is fixed to a vehicle body frame and concentrically constructed with respect to a tilt direction of a the driver's cabin with a hinge shaft as a center of tilting. The first and second engaging holes respectively correspond to a tilt down position and a tilt up position of the driver's cabin. The standing portion is inserted into an actuating member fixed to a driver's cabin frame, and a locking pin urged by a spring is slidably disposed to the actuating member. Since the locking pin slides on a surface of the standing portion, the locking pin can be automatically engaged with the first or second engaging hole. | 11-19-2009 |
| 20090273206 | REINFORCEMENT STRUCTURE FOR PIPE AND CAB STRUCTURE FOR CONSTRUCTION MACHINE HAVING THE SAME - A reinforcement structure for a pipe includes a hole section and a plate member. The hole section is formed on an outer peripheral surface of the pipe along a longitudinal direction of the pipe to pass through a peripheral wall of the pipe to reach an interior portion of the pipe. The plate member is inserted in the hole section and secured to the pipe. | 11-05-2009 |
| 20090267003 | SEMICONDUCTOR EXPOSURE DEVICE USING EXTREME ULTRA VIOLET RADIATION - The exposure device is able to supply only EUV radiation to a mask, while eliminating radiation other than the EUV radiation. A multi layer made from a plurality of Mo/Si pair layers is provided upon the front surface of a mirror, and blazed grooves are formed in this multi layer. Radiation which is incident from a light source device is incident upon this mirror, and is reflected or diffracted. Since the reflected EUV radiation (including diffracted EUV radiation) and the radiation of other wavelengths are reflected or diffracted at different angles, accordingly their directions of progression are different. By eliminating the radiation of other wavelengths with an aperture and/or a dumper, it is possible to irradiate a mask only with EUV radiation of high purity. | 10-29-2009 |
| 20090265065 | CONSTRUCTION VEHICLE - A construction vehicle includes an engine, a hydraulic pump configured to be driven by the engine, a traveling hydraulic motor configured to be driven by pressured oil discharged by the hydraulic pump, a traveling wheel configured to be driven by driving force of the traveling hydraulic motor, and a control unit configured to control a vehicle velocity and a traction force by controlling rotation speed of the engine, capacity of the hydraulic pump, and capacity of the traveling hydraulic motor. In addition, the control unit is further configured to perform slip reduction control for reducing the maximum rotation speed of the engine as the vehicle velocity becomes slow in a low-velocity range in which the vehicle velocity is less than or equal to a predetermined velocity. | 10-22-2009 |
| 20090261242 | APPARATUS FOR AND METHOD OF WITHDRAWING IONS IN EUV LIGHT PRODUCTION APPARATUS - An ion withdrawal apparatus that withdraws ions emitted from a plasma in an EUV light production apparatus in which a target at an EUV light production point is irradiated with laser light to be made in a plasma state and the target emits EUV light, the ion withdrawal apparatus which includes: a collector mirror that is disposed in a direction opposite to a laser light incidence direction to collect the EUV light and has a hole for the ions to pass therethrough; magnetic line of force production means that produces a magnetic line of force that is parallel or approximately parallel to the laser light incidence direction at or in the vicinity of the EUV light production point; and ion withdrawal means that is disposed on the opposite side of the collector mirror from the EUV light production point and withdraws the ions. | 10-22-2009 |
| 20090252588 | LIFT ARM FOR SKID-STEER LOADER - A lift arm for a skid-steel loader, in which a pair of right and left lift arms | 10-08-2009 |
| 20090250972 | Tilt Lock Structure of Driver's Cabin - A first engaging hole and a second engaging hole are formed in a fan-shaped standing portion which is fixed to a vehicle body frame and concentrically constructed with respect to a tilt direction of a the driver's cabin with a hinge shaft as a center of tilting. The first and second engaging holes respectively correspond to a tilt down position and a tilt up position of the driver's cabin. The standing portion is inserted into an actuating member fixed to a driver's cabin frame, and a locking pin urged by a spring is slidably disposed to the actuating member. Since the locking pin slides on a surface of the standing portion, the locking pin can be automatically engaged with the first or second engaging hole. | 10-08-2009 |
| 20090244920 | WORKING MACHINE - The work machine has an operator's cab, an engine hood, an exhaust pipe, a first headlight, and a second headlight. The engine hood is disposed in front of the operator's cab. The exhaust pipe projects upwards from the engine hood. The first headlight and the second headlight are provided at a front part of the operator's cab spaced in a lateral direction and disposed so that optical axes of the first and second headlights are mutually intersect but not to overlap with the exhaust pipe when viewed in a top plan view. | 10-01-2009 |
| 20090240406 | ENGINE CONTROL DEVICE FOR WORKING VEHICLE - An engine control device is adapted to a working vehicle that is capable of switching between a power mode and an economy mode, and capable of forcibly downshifting through gears of a transmission so as to shift down to a lower speed side. The engine control device includes an engine mode determining section configured to determine whether the engine mode is in the power mode or the economy mode, a gear detection section configured to detect a current gear of a plurality of gears, a kick-down detection section configured to detect a kick-down instruction, and a control section configured to switch the engine into the power mode when the kick-down instruction is detected while the engine mode is in the economy mode and the gears are in the lowest gear. | 09-24-2009 |
| 20090240404 | ENGINE CONTROL DEVICE FOR WORKING VEHICLE - This engine control device of a self-propelled working vehicle is an engine control device of a self-propelled working vehicle that includes a working machine hydraulic pump for driving a working machine, and includes a vehicle velocity detection section configured and arranged to detect a vehicle velocity and a traction force control section. The traction force control section is configured to reduce the traction force by limiting the maximum throttle amount when the vehicle velocity is less than or equal to predetermined velocity based on the result detected by the vehicle velocity detection section. | 09-24-2009 |
| 20090220328 | LIFT ARM FOR SKID-STEER LOADER - A lift arm for a skid-steel loader, in which a pair of right and left lift arms are divided in two so that they are constituted as first arm portions and second arm portions. Each of the first arm portions is constituted as a long member which is constituted from a sheet metal material and a hollow portion is formed from a proximal end to a front end of the first arm portion. Reinforcing plate-shaped bodies are fixed on both side faces from a central portion to the front end. Each of the second arm portions is constituted from a plate-shaped body and constituted between a front wheel and a loader main body so as to be inserted loosely. With this structure, it is possible to provide the lift arm which enables an entire length of the skid-steer loader to be shortened. | 09-03-2009 |
| 20090217654 | LOAD CONTROL DEVICE FOR ENGINE OF WORK VEHICLE - A load control device for an engine of a work vehicle that purposes to render the work vehicle, such as a wheel loader or the like, capable of raising a vehicle speed in a short period of time by providing a sufficient traction force when a high traveling load is imposed, without causing degradation of a vehicle body performance, waste of energy, and other problems. The load control device is provided with variable displacement hydraulic pumps ( | 09-03-2009 |
| 20090212500 | FLOATING SEAL - To prevent premature wear and damage of elastic rings caused by fine grained soil, floating rings | 08-27-2009 |
| 20090200826 | INTERIOR MEMBER FOR CAB OF WORK VEHICLE AND METHOD FOR FORMING SAME, AS WELL AS WALL MEMBER - An object is to enhance the sound absorbing functions of an interior member, and furthermore, to increase ease of assembly of the interior member, and the interior member for the cab is integrally formed so as to have a laminated structure where a sound absorbing material is contained between an outer layer material and a foundation body panel, or inside a foundation body panel. In addition, such an interior member is formed in accordance with a reaction injection molding method. | 08-13-2009 |
| 20090199796 | ENGINE VALVE DEVICE - An engine valve device includes an intake valve which opens and closes an intake port by a pressing force of a rotating cam and a pressing force of a valve spring, a piston which is movable in a same direction as the intake valve, a cylinder portion which houses the piston such that the piston is movable inside, a hydraulic actuator including the piston and the cylinder portion, a supply discharge pipe line which communicates with a pressure chamber formed by the piston and the cylinder portion, an accumulator which accumulates hydraulic oil flowed out from the pressure chamber via the supply discharge pipe line, and an electromagnetic on-off valve which controls a flow of the hydraulic oil between the pressure chamber and the accumulator. The electromagnetic on-off valve is arranged on the supply discharge pipe line between the hydraulic actuator and the accumulator. | 08-13-2009 |
| 20090199553 | HYBRID WORKING VEHICLE - An engine room is divided into a left room and a right room by a cooling unit. An intake chamber is disposed at a left side and an engine and the like are disposed at a right side. A cooling heat sink is provided on a side of the intake chamber, and a storage and a controller for controlling hybrid electronic devices are formed in this order in a cooling heat sink. Further, a cooling pump for supplying cooling liquid to the cooling heat sink is provided in the intake chamber. A radiator for cooling the cooling liquid is provided in front of the cooling unit. | 08-13-2009 |
| 20090178817 | BLADE DEVICE FOR WORKING MACHINE AND WORKING MACHINE MOUNTING BLADE DEVICE - Concave front face surfaces of a blade device having ratios and configurations continuing from an upper end to a lower end of the blade device, and having a central face coupling front faces and end front faces on the right and left thereof. | 07-16-2009 |
| 20090174214 | Instrument Panel, Module, and Vehicle - An instrument panel ( | 07-09-2009 |
| 20090163318 | ENGINE-LOAD CONTROL DEVICE FOR WORKING VEHICLE - An engine load control device is adapted to a working vehicle in which output of an engine is transmitted to drive wheels and to hydraulic actuators including a working equipment hydraulic actuator via a plurality of variable capacity hydraulic pumps. The control device includes an engine speed detection unit that detects an engine speed, an instruction content detection unit that detects contents of instructions of a speed instruction device, a hydraulic pump load detection unit that detects load of at least one load detection hydraulic pump among the variable capacity hydraulic pumps, and an absorption torque control unit. The absorption torque control unit controls absorption torque of at least one control hydraulic pump other than the load detection hydraulic pump based on detection results of the engine speed detection unit, the instruction content detection unit, and the hydraulic pump load detection unit. | 06-25-2009 |
| 20090151347 | Operation Control Circuit for Construction Machine - The operation control circuit of the present invention reduces the speed of an actuator, such as a rotation motor, according to reduction in the rotational speed of an engine. When the engine rotational speed is at its maximum, a pilot pressure in a pilot conduit is set to a relief pressure of a relief valve. When the engine rotational speed is reduced, the flow rate of pilot pressure hydraulic fluid decreases, and the pressure difference over a throttle section becomes smaller than the relief pressure, so that the pilot pressure is set to the pressure difference. Even if the operator operates an operation lever to a full stroke position the spool valve does not go to the fully opened state, since the pressure is low. As a result, the flow rate of hydraulic fluid supplied to the rotation motor is reduced, so that the speed of rotation is reduced. | 06-18-2009 |
| 20090148089 | BEARING SEAL AND SWING DEVICE - A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal. | 06-11-2009 |
| 20090146383 | BEARING SEAL AND SWING DEVICE - A bearing seal includes an outer seal easily displaceable in the radial direction, an inner ring as a ring-shaped rigid portion not extendable in the radial direction, an inner seal having a seal lip, and an outer ring arranged on the outer peripheral portion of the outer seal, in which the spring constant of the inner seal is set to be larger than the spring constant of the outer seal. The sealing performance between the inner seal and the pin is ensured by using the ring-shaped rigid portion as a boundary. When the pin is displaced in the radial direction, the ring-shaped rigid portion is integrally displaced with the pin via the inner seal, and the displacement of the ring-shaped rigid portion can be absorbed by the outer seal. | 06-11-2009 |
| 20090145376 | Control Device for Hydraulically Driven Fan - A control device for a hydraulically driven fan is provided with a cooling fan which is rotated by a hydraulic motor and carries out ventilation for cooling a working fluid. Further, the control device for the hydraulically driven fan is provided with a sensor for detecting a temperature of the working fluid, and a lever switch for detecting whether a working mechanism actuated by the engine is in a stopped state, by determining whether a working machine lever has been operated. In order that a resonance between the cooling fan and the engine is suppressed, the control device for the hydraulically driven fan further adjusts a rotating speed of the hydraulic motor in correspondence to a detection result by the lever switch. In the case that a stopped state of the working mechanism is detected on the basis of an operation state of the working machine lever by the lever switch, the rotating speed of the hydraulic motor is adjusted. Accordingly, it is possible to adjust and change the rotating speed of the cooling fan, thus it is possible to prevent resonance noise and vibration from being generated between the cooling fan and the engine. | 06-11-2009 |
| 20090142011 | Bearing device and pin for bearing device - A bearing device includes a bush and a pin inserted into the bush, whereby an outer peripheral face of the pin and an inner peripheral face of the bush contact each other. At least two oil reservoirs are formed on the outer peripheral face of the pin are and elongated along the length of the pin. The interval between the reservoirs is such that an angular range centered on the pin axial center between the first reservoir and the last reservoir is not more than a center angle of 40 degrees centered on the pin axial center. At least one of the reservoirs is configured by a plurality of punctate concave portions. | 06-04-2009 |
| 20090139316 | Cylinder Stroke Position Measurement Device - A cylinder stroke position measurement device for enabling common use of a rotation sensor unit in measurement of a cylinder stroke position by detecting an amount of rotation of a rotary roller by means of a rotation sensor. A cylinder is provided at its head portion with a base member | 06-04-2009 |
| 20090134665 | CAB STRUCTURE OF CONSTRUCTION MACHINE - The frame body is formed by a plurality of pipe-shaped members including a first column portion, a beam portion, the front end portion of which is connected to the upper end portion of the first column portion, and a middle column member that is disposed rearward from the first column portion. The upper guide portion is provided along a beam portion in a position ranging from a first position to a second position. Here, the first position is located frontward from the middle column member and rearward from the first column portion, and the second position is located rearward from the middle column member. | 05-28-2009 |
| 20090132131 | WORKING MACHINE - A working machine control device is provided which can surely determine whether working equipment attached to a working machine is in an operation state. The working machine control device is configured to control a vibration generating device that is supplied with pressure oil from a hydraulic pump to generate vibration to operate working equipment attached to a working machine. The working machine control device includes a controller that is configured to obtain frequency characteristic of the pump pressure based on a pump pressure value that is detected by a pressure sensing section, and to determine whether said working equipment is in an operation state or not based on said frequency characteristic. | 05-21-2009 |
| 20090128356 | Operation Permission Control Device and Machine Having the Same Mounted Thereon - A function for authenticating an operator to control whether to permit them to operate a vehicle ( | 05-21-2009 |
| 20090127888 | CAB STRUCTURE FOR CONSTRUCTION MACHINE - A cab structure for a construction machine that includes a plurality of pole members and can ensure the rigidity of the cab structure for a construction machine is provided. The cab structure unit includes the rear-right pole member that has a length that is shorter than other pole member (rear-left pole member) and does not reach the level of a floor panel (joint panel) so that the recessed space is formed in the rear side of the cab ( | 05-21-2009 |
| 20090120386 | Control Apparatus and Control Method for Hydraulically Driven Cooling Fan - An invention relating to a control apparatus and a control method for a hydraulically driven cooling fan for reducing the peak pressure produced upon reversing the switch position of a switching valve, without stopping an engine, and without greatly modifying existing hydraulic circuitry or increasing the apparatus cost. In the invention, in the case that a reversing switch has been operated so as to output a reversal processing commencement instruction signal, control is carried out such that, under the condition that the rotational speed of the engine has decreased to not more than a stipulated rotational speed, capacity adjusting means is controlled, so as to reduce the capacity of a hydraulic pump, and thus reduce the fan rotational speed, and then the switch position of the switching valve is reversed. | 05-14-2009 |
| 20090118895 | Mobile Object Monitoring Device - The present invention reduces power consumption as much as possible when an engine is off state. A mobile object monitoring device | 05-07-2009 |
| 20090115223 | CAB STRUCTURE FOR CONSTRUCTION MACHINE - A cab structure unit includes front-left and front-right pole Members, a rear-left and rear-right pole members. The pole members include a pipe member that is bent in a substantially L shape. The pole members include a straight pipe member. The rear end of a beam portion of the pole member and the upper end of the pole member arranged on the left side surface side of the cab that includes an arc part formed along the revolution circle of revolving unit are arranged at deviated positions from each other. The rear end of the beam portion of the pole member and the upper end of the pole member arranged at deviated positions from each other are joined to each other by the rear beam member. | 05-07-2009 |
| 20090103575 | LASER DEVICE - A laser device, which includes an oscillator unit having a rectangular-solid-shaped housing containing a laser oscillator for generating and outputting a laser light; an amplifier unit having a rectangular-solid-shaped housing containing an amplifier that receives and amplifies the laser light to output; and, a group of optical elements including optical elements provided on a laser light path, wherein the laser device includes one or more amplifier units, and the oscillator and the amplifier units are arranged such that surfaces having a wide area other than a surface having a smallest area of a housing of the oscillator unit and a housing of at least one amplifier unit are next to and face each other, or such that surfaces having a wide area other than a surface having a smallest area of a housing of at least two amplifier units are next to and face each other. | 04-23-2009 |
| 20090101372 | WORK MACHINE BLADE DEVICE AND WORK MACHINE INCLUDING THE SAME - A blade has an overall blade width of W, and includes a central front portion, interposition front portions, and side front portions. A straight first edge section is arranged on the lower end of the central front portion. Each of the front surfaces of the central front portion, the interposition front portions, and the side front portions is formed in an arc-shaped surface that has a prescribed radius R | 04-23-2009 |
| 20090095833 | Jaw crusher and self-traveling crusher - In a jaw crusher, cheek plates are mounted on side wall plates of a crusher frame by mounting bolts, and the mounting bolt adjacent to the outlet of the jaw crusher can be covered with the swing jaw by adjustment of an outlet gap-adjusting link mechanism. When the jaw crusher is in operation, the mounting bolt is covered by the swing jaw to avoid contact with raw materials, so that abrasion of and damages to the mounting bolt can be prevented. Thus, a longer lifetime of the jaw crusher can be promoted. Besides, since abrasion of and damages to the mounting bolt can be prevented, a mounting structure of the cheek plate can be stronger. | 04-16-2009 |
| 20090095441 | CONSTRUCTION VEHICLE - A construction vehicle includes vehicle frames, an operator cab, a hydraulic oil tank, and engine, and an engine cover. The operator cab is mounted on the vehicle frames. The hydraulic oil tank is disposed to the rear of the operator cab and stores hydraulic oil. The engine is disposed to the rear of the hydraulic oil tank. The engine cover is a member that covers the engine. A rear face of the hydraulic oil tank and a front face of the engine cover are the same size in a widthwise direction. A rear end of an upper face of the hydraulic oil tank is positioned at the same height as a front end of the upper face of the engine cover. The upper face and side faces of the hydraulic oil tank are exposed to outside. | 04-16-2009 |
| 20090090159 | PIPE EXPANDING METHOD AND PIPE EXPANDING DEVICE FOR STEEL PIPE - A pipe expanding device inserts a pipe expanding punch into an opening end portion of a steel pipe with a special shape in the state where the opening end portion of the steel pipe with a special shape is pressed in an insertion direction of the punch. | 04-09-2009 |
| 20090085303 | ROTATING WHEEL MECHANISM OF CONSTRUCTION MACHINE AND DRIVE WHEEL MECHANISM OF CONSTRUCTION MACHINE - A floating seal is provided between the fixed housing and the drive wheel, and an outside seal is provided so as to cover the outer circumference of the floating seal. The outside seal is composed of a gap between the fixed seal member secured to the fixed housing serving as a vehicle body and the rotating seal member rotatably secured integrally with the drive wheel. Blades that rotate on the outer circumference of the outside seal are provided on the outer circumference of the rotating seal member so as to protrude therefrom. By means of the blades, dirt accumulated in the fixed housing is scraped off. Therefore, dirt is prevented from being accumulated on the outer circumference of the outside seal, wherein it is possible to prevent dirt from entering the position of the floating seal and to appropriately discharge the dirt that has entered to the outside. | 04-02-2009 |
| 20090066154 | CRAWLER BELT - A first assembly | 03-12-2009 |
| 20090057049 | HYDRAULIC TRAVELING VEHICLE - A hydraulic traveling vehicle includes a right-travel motor a left-travel motor, a hydraulic pump, a merging/diverging valve and a travel switching unit. The merging/diverging valve is configured to switch between merging and separating a first hydraulic circuit and a second hydraulic circuit. The travel switching unit is configured to switch between a state where sharp turning takes place as a result of one of the right-travel motor and the left-travel motor being stopped and the other being driven, with the merging/diverging valve being in a merging state, and a state where gentle turning takes place as a result of the right-travel motor and the left-travel motor being driven at different rotational speeds, with the merging/diverging valve being in a diverging state. | 03-05-2009 |
| 20090057040 | HYDRAULIC TRAVELING VEHICLE AND CONTROL METHOD FOR HYDRAULIC TRAVELING VEHICLE - With a hydraulic traveling vehicle, a controller is configured and arranged to switch a merging/diverging valve to a merging state when a working equipment is driven with the merging/diverging valve being in a diverging state and with turning of the hydraulic traveling vehicle being carried out, and when a required flow rate parameter for pressurized oil of the working equipment is greater than or equal to a prescribed threshold value, and to maintain the merging/diverging valve in the diverging state when the required flow rate parameter is less than the prescribed threshold value. | 03-05-2009 |
| 20090053028 | WORK MACHINE - In a work machine | 02-26-2009 |
| 20090047146 | Eccentric Radial Piston Pump and Eccentric Radial Piston Motor - In an eccentric radial piston pump, a rib | 02-19-2009 |
| 20090045935 | Direction Indicator - If a turn signal switch is operated and a right-turn signal or a left-turn signal is input, a turn signal controller outputs a turn signal lamp lighting signal to a relay so as to make the turn signal lamp flash. Detection signals of an operating amount and an operating direction of a joy stick are input to a main controller, and the main controller detects a steering angle of the vehicle on the basis of the input detection signals, and outputs the steering angle to the turn signal controller. The turn signal controller determines that a course change is finished in case the input steering angle becomes smaller than a second steering angle after becoming larger than a first steering angle, and stops a turn signal lamp lighting signal on an output state so as to turn off a flashing turn signal lamp. | 02-19-2009 |
| 20090045674 | TRACK BELT ASSEMBLY - A track chain assembly ( | 02-19-2009 |
| 20090045003 | CONSTRUCTION VEHICLE - The construction vehicle includes an engine, an accelerator pedal, a main pump configured to be driven by the engine, first and second traveling motors driven by pressured oil discharged from the main pump to generate driving force for traveling, a driving shaft configured to receive the driving force from the first traveling motor and the driving force from the second traveling motor, a clutch configured to switch between transmission and non-transmission of the driving force from the second traveling motor to the driving shaft, an accelerator opening degree detection unit, a vehicle velocity detection unit, and a control unit. The control unit is configured to determine the switchover velocity depending on the opening degree of the accelerator pedal, and to control the clutch when the vehicle velocity that is detected by the vehicle velocity detection unit reaches the switchover velocity. | 02-19-2009 |
| 20090038910 | PANEL-CARRYING-OUT APPARATUS - A panel-carrying-out apparatus used for conveying panels ejected from a press machine includes: a semicircular sorting conveyor adapted to be driven switchably in a normal direction or a reverse direction; and a pair of straight conveyors respectively disposed at ends of the sorting conveyor. Each of the panels from the press machine is mounted on the center position of the sorting conveyor in terms of a conveying path. Specifically, an arced conveyor included in the sorting conveyor, on which each of the panels is initially mounted, is adapted to be driven switchably in the normal direction or the reverse direction. | 02-12-2009 |
| 20090036270 | WORKING VEHICLE - In a working vehicle, a control unit is configured to control an engine based on an engine power curve indicating a relationship between an engine speed and an engine output torque. The control unit is further configured to calculate an absorption horsepower that is an absorption horsepower of a hydraulic pump and to change the engine power curve used to control the engine based on the absorption horsepower. | 02-05-2009 |
