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KUBOTA CORPORATION

KUBOTA CORPORATION Patent applications
Patent application numberTitlePublished
20120024100Speed Change Operation Apparatus for Stepless Speed Changer Device - A speed change operation apparatus includes a pivotal body operatively connected to a trunnion shaft to be pivotally displaced in response to an operational displacement by an operational tool, a positioning body operatively coupled with the pivotal body so as to be pivotally displaced in response to a pivotal displacement of the pivotal body, a main urging mechanism for applying an urging force to the pivotal body via the positioning body for returning the pivotal body from an operational position to the neutral position, and an auxiliary urging mechanism for applying an auxiliary urging force to the pivotal body for returning the pivotal body from the operational position to the neutral position. The returning urging force by the main urging mechanism when the trunnion shaft is located at the neutral position is stronger than the returning urging force by the main urging mechanism when the trunnion shaft is located at the operational position. And, the auxiliary urging force by the auxiliary urging mechanism when the trunnion shaft is located at the neutral position is weaker than the auxiliary urging force by the auxiliary urging mechanism when the trunnion shaft is located at the operational position.02-02-2012
20120023886RIDING MOWER - A riding mower having left and right driving rear wheels independently drivable forward and backward and a pair of left and right steerable front wheels is provided with a support device capable of being mounted with a cylindrical gas cylinder in a horizontal position on an external side of a rollover projection frame. The support device is provided such that the mounted gas cylinder is positioned along front and rear of the rollover protection frame and is mounted in a tilted state in which the central axis of the cylindrical gas cylinder is closer to a central side in a lateral direction of a vehicle body toward a rear side from a plan view.02-02-2012
20120018973Suspension Arm Unit for Vehicle - A suspension arm unit for vehicle includes: a pair of profile beams each having a U-shaped cross section with an opening oriented in a horizontal direction and including: a base end part formed on one end side of the profile beam and vertically swingably supported on a vehicle body side about an axis extending in a front-rear direction; and a distal end part formed on the other end side, to which a knuckle arm unit of a wheel is attached. The pair of the profile beams are arranged in the front-rear direction so that the openings face each other in the front-rear direction and a gap between the profile beams becomes larger from the distal end part to the base end part, and the pair of the profile beams are connected to each other at the distal end part and to the knuckle arm unit through a rotary joint.01-26-2012
20120018367MEMBRANE SEPARATOR - A plurality of membrane elements 01-26-2012
20120017573EXHAUST TREATMENT DEVICE OF DIESEL ENGINE - An object of the present invention is to provide the exhaust treatment device of a diesel engine which is capable of prohibiting the execution of DPF regenerating processing in a situation in which the DPF regenerating processing is inappropriate.01-26-2012
20120016659Display Apparatus for Work Machine and Language Rewriting System for Display Apparatus - The invention provides for making it possible to readily display information relating to a work machine, even when the mode of national language differs between the user and the vendor. The invention is characterized by a user information displaying means for displaying user information relating to the work machine to a user who is operating this work machine and a vendor information displaying means for displaying vendor information relating to the work machine, separately from the user information. The user information displaying means includes a plurality of national languages corresponding to said user information so that the user information can be displayed in a plurality of national languages. The vendor information displaying means includes a plurality of national languages corresponding to the vendor information so that the vendor information can be displayed in a plurality of national languages.01-19-2012
20120000186EXHAUST GAS TREATMENT DEVICE OF DIESEL ENGINE - The present invention relates to an exhaust gas treatment device of a diesel engine that is capable of increasing the concentration of PM in the EGR gas, wherein an exhaust gas separator 01-05-2012
20110318593CAST PRODUCT HAVING ALUMINA BARRIER LAYER - A cast product for use in high temperature atmosphere comprising a cast body of a heat-resistant alloy comprising of, in mass percent, 0.05 to 0.7% of C, over 0% to up to 2.5% of Si, over 0% to up to 3.0% of Mn, 15 to 50% of Cr, 18 to 70% of Ni, 2 to 4% of Al, 0.005 to 0.4% of rare-earth elements, and 0.5 to 10% of W and/or 0.1 to 5% of Mo, the balance being Fe and inevitable impurities, and a barrier layer formed at a surface of the cast body to be brought into contact with said high temperature atmosphere, said barrier layer comprising an Al12-29-2011
20110314953Tiltable Steering Wheel Apparatus for Work Vehicle - A tiltable steering wheel apparatus comprises a tilting mechanism provided under a grip portion of a steering wheel. The tilting mechanism includes a steering wheel support member for supporting the steering wheel to be tiltable about a pivotal axis extending along a transverse direction of a vehicle body, and a control lever switchable between a tilting allowing mode for allowing tilting movement of the steering wheel and a tilting preventing mode for preventing tilting movement of the steering wheel. The control lever has an extension extending toward the grip portion with a manual control portion provided in a distal end thereof to be operable with the fingers of the operator holding the grip portion of the steering wheel.12-29-2011
20110303045Control Lever Device for Work Vehicle - A control lever device for a work vehicle. The control lever device comprises a plurality of control levers to be movable along paths arranged in parallel with each other, a vertical limit member including lever openings formed therein for the plurality of control levers and extending to allow the movement of the control levers, dust-proof members movable along the back surface of the vertical limit member following the movement of the control levers to close the lever openings, lateral limit members for limiting displacement of the dust-proof members in a lateral direction relative to the moving direction of the control levers, and a base defining a movable surface for the dust-proof members. The vertical limit member and the lateral limit members are formed as a single cover to cover the dust-proof members.12-15-2011
20110290710MEMBRANE SEPARATION DEVICE - Disclosed is a membrane separation device comprising a plurality of flat membrane elements (12-01-2011
20110264351Speed Control Structure and Method for Work Vehicle - A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.10-27-2011
20110259012WORKING VEHICLE - A working vehicle has a cooling fan provided on a first side of an engine to blow air to the engine; a muffler main body provided on a second side thereof in a position lower than an upper surface of a head cover of the engine; and an exhaust pipe exposed in a position facing an air blowing path of the cooling fan higher than the upper surface of the head cover of the engine to discharge exhaust from the muffler main body.10-27-2011
20110252911Work Vehicle - There are provided a forward/reverse switchover lever pivotally operably about, as a pivotal center, a position which is inwardly of an outer periphery of a steering wheel and laterally outer side of vehicle body of a rotational axis of the steering wheel as seen in a direction along the rotational axis and a pivotal support shaft pivotally supporting the forward/reverse switchover lever at a position lower than the steering wheel such that a pivotal end of the forward/reverse switchover lever projects to the laterally outer side beyond the outer periphery of the steering wheel.10-20-2011
20110241379Cabin System - A cabin system to be mounted on a vehicle body is disclosed. The cabin system includes a driver's seat, an air conditioner body for indoor air conditioning disposed downwardly of the drive's seat, a plurality of support pillars constituting a cabin framework, a ceiling portion, and a main duct having a hollow tubular construction, the main duct forming therein an air passageway for the indoor air conditioning. The main duct includes, at a lower portion thereof, a duct connecting opening to be connected to the air conditioner body and also includes, at a lateral portion thereof, a support pillar engaging face. The main duct is attached through the support pillar engaging face to one of the support pillars along an indoor side peripheral face of the one support pillar. The support pillar engaging face of the main duct and the indoor side peripheral face of the one support pillar have profiles complementary with each other.10-06-2011
20110233963Cabin Unit for Work Machine - A cabin unit for a work machine comprises a cabin frame including a ceiling frame forming a top portion of the cabin frame, and a door open frame forming a front portion of the cabin frame; a door provided in the door open frame; a door opening/closing mechanism for supporting the door from the door open from to the ceiling frame to be moved rearward and upward from a closed position for closing the door to an open position in which a front surface of the door in the closed position is directed upward; a locking mechanism provided above the door for limiting movement of the door when in the closed position or the open position; and a first unlocking mechanism provided in the door for unlocking the locking mechanism. The first unlocking mechanism includes an internal control member for releasing the locked state from the inside of the door, and an external control member for releasing the locked state from the outside of the door.09-29-2011
20110233909Tractor - A tractor includes a ROPS frame having right and left leg portions connected to either a transmission case or rear axle cases, a front frame connected to a portion of the transmission case forwardly of the ROPS frame and extending in the right/left direction, a right attaching frame connected to and between the right leg portion of the ROPS frame and a right side portion of the front frame and extending in the fore/aft direction, a left attaching frame connected to and between the left leg portion of the ROPS frame and a left side portion of the front frame and extending in the fore/aft direction, and right and left fenders. The right fender is attached to the right attaching frame and the left fender is attached to the left attaching frame.09-29-2011
20110232250Mower Unit Suspended from a Grass Mower - A mower unit is disclosed, including a mower deck mounting therein in parallel layout first, second and third rotary blades rotatably driven about vertical axes and a washing device. The mower deck includes a top wall, side walls and first, second and third auxiliary side walls for evacuation, the auxiliary side walls having shapes along at least a machine body rear portion of the rotary path of each rotary blade. The washing device includes a single water supplying unit disposed upwardly of the top wall for supplying washing water and first, second and third water discharging units disposed through the first, second and third auxiliary side walls for discharging water to the first, second and third rotary blades respectively. The washing device includes also a water supplying pipe unit interconnecting and communicating the water supplying unit to the first, second and third water discharging units. The water supplying pipe unit is disposed within a mower deck rear space delimited by outer faces of the first, second and third auxiliary side walls. The first, second and third water discharging units are configured to discharge the washing water in such a manner that the center flow portion of the discharged water respectively therefrom is confined within the inner space of the mower deck.09-29-2011
20110178684Speed Change System for Work Vehicle - A speed change system for work vehicle having a continuously variable transmission device selects a first change gear ratio which is set larger than a smallest change gear ratio, when an engine rotational speed is a first set rotational speed which is set equal or close to an idling rotational speed of an engine; retains the change gear ratio of the continuously variable transmission device at the smallest change gear ratio, when the engine rotational speed is equal to or above a second set rotational speed set on a high-speed side relative to the first set rotational speed; and makes the change gear ratio of the continuously variable transmission device larger between the first change gear ratio and the smallest change gear ratio, as the engine rotational speed at that moment becomes lower, when the engine rotational speed is between the first and second set rotational speeds.07-21-2011
20110172895Condition Evaluation System for Engine-Driven Traveling Vehicle - A fuel consumption amount evaluation system is disclosed. The system includes a rotational speed detecting section (07-14-2011
20110172892PTO Control System - A PTO control system for allowing selection between an independent PTO mode and an interlock PTO mode, comprising a mode-switch command input device 07-14-2011
20110167808ENGINE WITH EXHAUST GAS TREATMENT APPARATUS - An object of the present invention is to provide an engine having an exhaust gas treatment apparatus attached thereto, wherein an exhaust pipe 07-14-2011
20110155093Engine Case - An engine case includes: a crank chamber (06-30-2011
20110132678Work Vehicle with Engine, Air Cleaner, and Battery - A work vehicle includes: a seat disposed between front wheels and rear wheels; an engine disposed between the right and left rear wheels rearward of the seat; a battery disposed in a container space positioned downward of the seat disposed frontward of the rear wheels; an air cleaner disposed in the container space and arranged proximally to the battery in a vehicle longitudinal direction; and an opening-closing lid unit for covering the air cleaner and the battery from outside in a vehicle transverse direction. An element of the air cleaner is disposed in the air cleaner so that the element is insertable and removable in the vehicle transverse direction, and a position of the air cleaner is set so that the element is accessible from outside the vehicle body.06-09-2011
20110131942Riding Type Grass Mower having a Rear-Discharge Type Mower Unit - A riding type grass mower includes a right wheel and a left wheel, a rear-discharge type mower unit disposed forwardly of the right/left wheels, a driver's seat disposed between and upwardly of the right/left wheels, an engine mounted rearwardly of the driver's seat, an engine hood for covering the engine, and a restricting unit disposed rearwardly of the driver's seat and at an area downwardly of the engine hood, the restricting unit having a restricting face (including a mesh face) configured to restrict upward rising of cut grass discharged from the mower unit.06-09-2011
20110098885Suspension System - A suspension system for a traveling vehicle body is disclosed. The system includes a suspension reference position varying mechanism (04-28-2011
20110091307Loader Work Machine - A loader work machine is disclosed in which a base portion of each of right/left arms (04-21-2011
20110079305Work Vehicle Having Hydraulic Appratus - Disclosed is a work vehicle having a hydraulic apparatus which can reliably prevent erroneous operation of the valve of the hydraulic apparatus even when the operating lever is moved inadvertently. With this hydraulic apparatus, with operations of a single operating lever in two directions, two valves are operated respectively. Two valve operating links for operating the two valves respectively are pivotally supported to a support shaft provided to a pair of frame plates and a lock pin is provided to the frame plates. The two valve operating links form pin holes. When the two valves are at the neutral positions, the lock pin is inserted into the pin holes with a locking operation of a lock operating tool, thus fixing the valve operating links and locking the valves.04-07-2011
20110074182Swivel Frame - A swivel frame for a swivel work machine includes a swivel base plate supported on a traveling machine body to be pivotable about a swivel axis and mounting an engine at a rear portion thereof, a support bracket provided at a front end of the swivel base plate for supporting an excavator, a partition wall provided on the swivel base plate for partitioning space forwardly of the engine in the fore/aft direction, and a pair of right and left vertical ribs provided on the swivel base plate for interconnecting the support bracket and the partition wall. The swivel base plate is divided into a rear plate portion on the rear side thereof and a front plate portion on the front side thereof, the rear plate portion being formed of a plate thinner than the front plate portion. The rear plate portion and the front plate portion are fixedly connected to each other in such in a manner that upper surfaces thereof are flush each other. A rear portion of the front plate portion projects more rearward than the partition wall. A pair of vertical walls are formed on and project from the rear plate portion. Front portions of the pair of vertical walls project more forward than the rear plate portion and are fixedly attached to the rear portion of the front plate portion and the partition wall.03-31-2011
20110073083BLOW-BY GAS RECIRCULATING APPARATUS FOR AN ENGINE - It is an object of the invention to provide a blow-by gas recirculating apparatus for an engine in which the ventilation efficiency of a crankcase can be enhanced.03-31-2011
20110067892Dozer Apparatus - The invention is intended to make it possible to reduce the overall lengths of a vertical shaft and a fore/aft shaft, while securing sufficient shaft strengths thereof, so that the vertical dimension from the fore/aft shaft to a tilt cylinder may be formed short and to render the construction on the rear face side of a blade compact. A traveling machine body 03-24-2011
20110061630MULTI-CYLINDER DIESEL ENGINE - It is an object of the invention to provide a multi-cylinder diesel engine in which a thermal damage of a common rail, and a rise in fuel temperature can be suppressed.03-17-2011
20110048162Grip - A grip comprises a grip body forming a gripping control portion of a manually operable device to be held with the operator's palm and fingers. The grip body includes a ball-receiving surface coming into contact with the ball of the thumb, a palm-receiving surface coming into contact with a middle portion of the palm and the ball of the little finger, a finger-receiving surface coming into contact with the fingers, an open surface positioned between the tips of the fingers and the ball of the thumb for receiving the thumb when the grip body is held, and a switch mounted on a top portion of the grip body to be operable with the thumb. The grip body further comprises a thumb-guiding portion in the form of a shallow groove formed at an upper part of the ball-receiving surface of the grip body, the inside of the first joint of the thumb being placed along the thumb-guiding portion when the switch is operated, and a rising portion formed on at least either one of portions between the thumb-guiding surface and the open surface and between the thumb-guiding surface and the palm-receiving surface for applying resistance when the operator's hand advances into the switch.03-03-2011
20110030406Cabin For A Work Vehicle - A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.02-10-2011
20110005987SUBMERGED MEMBRANE SEPARATOR AND MEMBRANE CARTRIDGE - A submerged membrane separator includes: a plurality of membrane cartridges arranged at predetermined spaces; a flow generating device for generating flows in one direction along the membrane surfaces of the membrane cartridges; and wall members on both sides of a channel of the flow in the one direction formed between the membrane cartridges adjacent to each other. The membrane cartridges can be attached and detached from another direction substantially orthogonal to the flows in the one direction and substantially orthogonal to the arrangement direction of the membrane cartridges.01-13-2011
20100331131Hydraulic Pump Device for Work Vehicle - A hydraulic pump device for a work vehicle having a transmission case that houses a PTO shaft (12-30-2010
20100323876NONCRYSTALLINE COMPOSITE ALKALI METAL TITANATE COMPOSITION AND FRICTION MATERIAL - A noncrystalline composite alkali metal titanate composition which is chemically stable, outstanding in resistance to hygroscopicity and suited as base materials for friction materials. The said composition comprises at least 60 wt. % of an alkali metal titanate represented by the general formula M12-23-2010
20100300778Structure for Attaching Rear Work Machine to Tractor - A structure for attaching a rear work machine to a tractor is provided. The tractor has a vehicle body which is provided with right and left rear work machine connection bodies, each having upper and lower connection portions. The rear work machine includes a base frame with an operator's seat, which is provided with right and left attaching plates, each having upper and lower engagement portions. The rear work machine can be attached to the tractor by connecting the upper and lower engagement portions to the upper and lower connection portions, respectively. The attaching structure includes: a rear work machine attaching spacer disposed between the rear work machine connection body and the corresponding attaching plate, the rear work machine attaching spacer including: a fixing portion for fixing to the attaching plate; and the upper and lower spacer engagement portions for removably connecting the upper and lower connection portions, respectively.12-02-2010
20100269530Cabin For Work Vehicle - A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof; an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.10-28-2010
20100253115Vehicle With Cabin - A vehicle with a cabin comprises a vehicle body supported by a plurality of wheels; a cabin bracket supported by the vehicle body; an elastic member for supporting the cabin, disposed between the cabin and the cabin bracket; and a weight member attached to a plate-shaped member of the cabin.10-07-2010
20100244488Vehicle With Cabin - A vehicle with a cabin comprises a vehicle body supported by a plurality of wheels; a cabin bracket supported by the vehicle body; an elastic member for supporting the cabin, disposed between the cabin and the cabin bracket; and a weight member attached to a plate-shaped member of the cabin.09-30-2010
20100244422Track Frame for Work Machine - A track frame in which stress concentration caused by a work load is avoided and that has increased strength. These are achieved by reducing the weigh of connection legs and providing sufficient welding length for joint surfaces for joining the connection legs. The track frame has a front and rear pair of left/right connection legs (09-30-2010
20100244394Suspension System for Vehicle - A suspension system for a vehicle includes a swing frame and right and left suspension cylinders for front wheels. The swing frame is swingably supported by the front portion of a vehicle body about a support shaft extending in a lateral direction, and supports the front axle case, so as to allow the front axle case to swing about a center shaft extending in a front-rear direction. The right and left suspension cylinders are provided on the swing frame. A lateral oscillation regulation unit is provided between the swing frame and the front frame, and configured to regulate an oscillation of the swing frame by contact in the lateral direction.09-30-2010
20100242932SPARK-IGNITION ENGINE - A spark-ignition engine comprises a plug hole (09-30-2010
20100242924Fuel System for Traveling Vehicle - Disclosed is a fuel system for a traveling vehicle having an engine mounted on a vehicle body and a ROPS extending upward from the vehicle body. The fuel system includes a fuel tank accommodating an amount of fuel, a canister, an evaporating hose including a first evaporating hose portion and a second evaporating hose portion for sending fuel vapor generated inside the fuel tank to the canister. The first evaporating hose portion is connected to the fuel tank and extending upward from the fuel tank along a vertical post of the ROPS. The second evaporating hose portion extends downward along a vertical post of the ROPS and is connected to the canister.09-30-2010
20100242637Transmission Device for Work Vehicle - A transmission device for a work vehicle, comprising a travel drive system for transmitting engine power to a travel device; an implement drive system for transmitting engine power to an external power take-off shaft; braking operation tools for a braking operation; a stop operation mechanism provided to the travel drive system and capable of interrupting the transmission of power to the travel device; and a hydraulically operated PTO clutch for interrupting the transmission of power to the external power take-off shaft, the PTO shaft being provided to the implement drive system; wherein 09-30-2010
20100236233Work Machine - Disclosed is a work machine having a traveling apparatus and a work implement driven by an engine. A hydraulic system mounted on the work machine includes an HST pump comprising a swash plate, variable displacement pump driven by the engine, an HST motor connected in a closed circuit to the HST pump and a pair of speed-changing oil passageways, the HST motor being driven by an amount of oil supplied by the HST pump, thereby to drive the traveling apparatus, a main pump driven by the engine, the main pump supplying pressure oil to the work implement, a pilot pump driven by the engine, a swash plate positioning circuit configured to effect positioning of a swash plate of the HST pump with pilot oil supplied from the pilot pump, and a bleed circuit configured to drain, via a throttle, a portion of the pilot oil supplied to the swash plate positioning circuit.09-23-2010
20100230073Mounting Arrangement for Mounting Cooler Unit to Work Machine - A mounting arrangement for mounting a cooler unit to a work machine has a traveling device, a machine body frame, an engine and the cooler unit disposed adjacent the engine. The arrangement includes a support deck provided in the machine body frame for supporting the cooler unit, an attachment unit for releasably fixing the cooler unit to the machine body frame and a movement mechanism provided between the cooler unit and the support deck, the movement mechanism allowing the cooler unit to effect a translational movement to change a distance relative to the engine.09-16-2010
20100206272Fuel System for Vehicle with Engine - A fuel system for a vehicle with an engine includes: a fuel tank for storing fuel: first and second ports disposed on a wall of the fuel tank, between which wall and a fuel fluid level a clearance is created when the fuel is contained in an allowable maximal amount in the fuel tank of the vehicle in a horizontal state, the first and second ports being positioned frontward and rearward, respectively, in a longitudinal direction of the vehicle, and the first port and the second port being out of alignment in a lateral direction; a canister for adsorbing and releasing a fuel vapor; an inflow line for sending the fuel vapor generated in the fuel tank to the canister through the first and second ports; and a discharge line for sending the fuel vapor from the canister to an air-intake path to the engine.08-19-2010
20100201156Vehicle Frame for Work Vehicle and Method for Manufacturing Same - The vehicle frame for a work vehicle includes a cabin frame that is assembled into a substantially box form. A base frame is welded to the cabin frame. The cabin frame includes left and right side frames, each of which is formed into a loop. The cabin member includes a plurality of cross members for connecting the left and right side frames. Each of the side frames is formed with a single one-piece pipe material having a first end and a second end with the first end connected to the second end such that a tangential direction extending along a region of the first end coincides with a tangential direction extending along a region of the second end. The pipe material has an irregular shape having a recess formed along the entire length between the first end and the second end of the pipe material.08-12-2010
20100199954VAPORIZED-FUEL PROCESSING DEVICE FOR AN ENGINE - The present invention has an object to provide a vaporized-fuel processing device for an engine, capable of stabilizing the idling operation.08-12-2010
20100197453Travel Operation Structure for Work Vehicle - A travel operation structure of a work vehicle, comprising a pair of left and right side brake pedals disposed on either the left or right of a steering wheel; a hydro static transmission for changing the speed of travel; and a stop operation pedal disposed on the other of the left and right of the steering wheel; wherein the corresponding left or right side brake is applied when one of the pair of left and right side brake pedals is depressed, and when both the left and right side brake pedals are depressed, both the left and right side brakes operate, and travel is stopped; and when the stop operation pedal is depressed, operating oil of the continuously variable speed change device is directed into an oil tank, and the continuously variable speed change device is switched to a neutral stop position for blocking transmission of power to the travel device.08-05-2010
20100191404Display System for Work Vehicle - A display system for a work vehicle is disclosed including a display device (07-29-2010
20100184551Speed Change Transmission System - In order to provide a speed change transmission system which can be obtained compactly, while obtaining output at steplessly varied speeds over a large speed change range only by carrying out a simple shifting operation, the speed change transmission system has a hydrostatic stepless transmission to which engine drive is inputted. A planetary transmission device (P) has a plurality of planetary transmission mechanisms, for combining output of the stepless transmission and engine drive not undergoing speed change action by the hydrostatic stepless transmission. A plurality of transmission shafts are provided with a plurality of speed range setting clutches, switchable for converting the combined driving force from the planetary transmission device (P) to a driving force in a plurality speed ranges, and transmitting it to an output rotary member. The plurality of transmission shafts are juxtaposed and arranged in parallel.07-22-2010
20100168959Hydraulic Suspension System for Work Vehicle - The hydraulic suspension system comprises a suspension mechanism (07-01-2010
20100152981Speed Control Structure and Method for Work Vehicle - A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data that correlates the actual engine rotation speeds with operating positions of the continuously variable speed change device, and controls the operating device such that the operating position of the continuously variable speed change device moves to the limit operating position based on the set limit operating position and detected information from the speed change position detecting device, and wherein the control device has command device for commanding a change of the correlation data.06-17-2010
20100148573Crawler Travel Unit - A track frame is swingably supported by a rear axle case of a travel machine body through a rocking shaft; front and rear driven wheels are disposed in front and rear end portions of the track frame; at least three idling wheels are disposed on an intermediate portion of the track frame at intervals in a longitudinal direction; a drive wheel which is disposed upward of a longitudinal intermediate portion of the track frame and is configured to receive a power transmitted from a rear axle supported by the rear axle case; and a crawler belt is wrapped around the drive wheel, the front driven wheel, the rear driven wheel and the idling wheels. Two idling wheels on a rear side of the at least three idling wheels are pivoted on a first rocking link, and a longitudinal intermediate portion of the first rocking link is pivoted on the track frame through a first pivot shaft.06-17-2010
20100143206THERMAL CRACKING TUBE - A thermal cracking tube is provided which is adapted to suppress pressure losses to the greatest possible extent while maintaining a heat transfer promoting effect on the fluid inside the tube. The tube passes a fluid therethrough from one end thereof toward the other end and has a plurality of rows of projections extending circumferentially along an inner surface of the tube orthogonal to or as inclined with respect to the axis of tube, each of the projection rows including a plurality of projections provided on the tube inner surface. The tube is defined by S/10πD=0.2-0.7, h/D=0.02-0.05 and L/πD=0.04-0.5 wherein D is the inside diameter of the tube, h is the height of an optional projection A included in a projection row α, L is the length of circular arc of the projection A in a direction orthogonal to the tube axis, and S is the area of a region R surrounded by the projection A, phantom lines L06-10-2010
20100143087Loader Work Machine - A loader work machine includes: a first lift link (06-10-2010
20100143086Loader Work Machine - An improvement of a loader work machine is disclosed. A machine body frame includes a frame body having a bottom wall and a pair or right/left side walls, and a pair of right/left support frame members connected to a rear end of the frame body. A cabin is mounted on the machine body frame. A transverse connecting member is disposed rearwardly of the cabin for connecting the pair of right/left support frame members to right/left sides thereof, respectively. A pair of right/left arms are disposed on right/left sides of the machine body frame, with base portions thereof being vertically pivotally supported to the pair of right/left support frame members, respectively. A pair of right/left arm cylinders are provided between the base portions of the arms and the rear portions of the machine body frame for lifting up/down the arms. A hood is provided at the rear end of the frame body and downwardly of the transverse connecting member between the pair of right/left support frame members, for housing an engine. The transverse connecting member includes a front wall plate and an upper wall plate projecting rearward from an upper end of the front wall plate. The upper wall plate of the transverse connecting member is disposed more downwardly than the vertical center of the cabin. A rear portion of the upper wall plate is inclined downwardly rearward. A hood upper wall is provided for covering a rear upper side between the pair of right/left support frame members. A front end portion of the hood upper wall is connected to the rear portion of the upper wall plate of the transverse connecting member. The hood upper wall is inclined downwardly rearward in correspondence with the rear portion of the upper wall plate.06-10-2010
20100139228Climb-Up Assist Structure for Mower Unit - A mower unit configured to be supported to a work vehicle at a position between front wheels and rear wheels, comprises a mower deck; at least one blade supported by the mower deck; a climb-up assist member in which an inclined surface is formed for assisting the wheels in climbing over the mower unit; and a connecting device for detachably connecting the climb-up assist member to the mower unit in a service position in which the inclined surface assists the wheels in climbing over the mower unit.06-10-2010
20100122863Hood Structure of Work Vehicle - A hood structure of a work vehicle comprise, a hood supported to open and close relative to a vehicle body, the hood having a rear end portion bent toward an interior space of the hood to form a bent edge portion, an open-position retainer bracket attached to the rear end portion of the hood, and an open-position retainer member attached to the open-position retainer bracket to maintain the hood in an open position. The open-position retainer bracket extends cantileverwise forwardly of the hood from an attaching portion of the open-position retainer bracket that is attached to the rear end portion of the hood with a gap being defined between the open-position retainer bracket and a top surface of the hood. The open-position retainer member is attached to an extending end of the open-position retainer bracket.05-20-2010
20100122862Bonnet Sealing Structure for Work Machine - A bonnet sealing structure for a swiveling work machine includes: a bonnet configured to cover an engine provided on a swivel stage including: a fixed cover, and an open-close cover which is swingably supported about a vertical shaft and is openable and closable relative to the fixed cover; a sealing member through which an upper end portion of the open-close cover is brought into contact with an upper end portion of the fixed cover when the open-close cover is closed; and a cover piece protruding from one of an upper wall of the open-close cover and an upper wall of the fixed cover, wherein when the open-close cover is closed, the cover piece is located above the sealing member and reaches a point above the other of the upper wall of the fixed cover and the upper wall of the open-close cover.05-20-2010
20100114451Control System for Working Machine - A plurality of control units capable of communicating with each other via a data communication network (TU) are disposed in distribution. One of the plurality of control units is set as an information management control unit (H05-06-2010
20100077713Riding Mower - A riding mower comprises a raising and lowering mechanism (04-01-2010
20100071358Hydraulic System of Work Machine - A hydraulic system of a work machine with a hydraulically controlled implement includes: an operating oil flow passage for flowing operating oil from a main pump; a boost flow oil passage for supplying operating oil to the operating oil flow passage; a connection unit for connecting the implement which is provided downstream of the confluence on the operating oil flow passage; a controller for controlling the high-flow valve; and a high-flow switch which is connected to the controller and is configured to effect or cancel a command of the amount increase on a high-flow valve. Annunciation is made when the connection unit is connected to a high-flow actuator for the implement requiring an amount increase of the operating oil, and the amount increase is effected by the high-flow valve in accordance with an operation of the high-flow switch.03-25-2010
20100064649WORK VEHICLE HAVING CONVEYANCE MECHANISM WITH BLOWER - A work vehicle includes: a container; a conveyance mechanism configured to convey an object to the container using a force of wind generated by a blower; and an evaluation unit configured to evaluate a conveyance state of the conveyed object to the container. The evaluation unit has a drive load detecting function of detecting a drive load of the blower, and a conveyance state determining function of determining whether the conveyance state reached a predetermined conveyance state, based on the detected drive load.03-18-2010
20100051358Crawler Traveling Apparatus - A crawler traveling apparatus includes a traveling vehicle body having a rear axle case, a track frame supported via a pivot shaft to the rear axle case, a pair of front and rear driven wheels mounted at front and rear end portions of the track frame, a pair of the rear driven wheels being provided on the right and left sides across a rear end portion of the track frame, a free wheel mounted at an intermediate portion of the track frame, a crawler entrained about a drive wheel, the front and rear driven wheels and the free wheel, a rearwardly downward inclined face formed at an upper portion of the rear end portion of the track frame, the inclined face being configured to cause an amount of earth/sand to drop off its surface; and a rear upper cover provided at an upper portion of the rear portion of the track frame in the vicinity of said inclined face, the rear upper cover forming a rear upper inclined face that is oriented downward in the right/left outward direction, the rear upper inclined face being configured to cause an amount of earth/sand to drop off its surface.03-04-2010
20100031620Riding Type Mower - A riding type mower includes: a vehicle body, a driver's seat mounted on the vehicle body; an operation part arranged around the driver's seat; a mower unit provided on the vehicle body; a shutter for closing a discharge port; a shutter moving mechanism for moving the shutter between a close position closing the discharge port and an open position opening the discharge port; and a lock mechanism for locking the shutter at the close position. The mower unit includes: a mower deck; a cutting blade installed inside the mower deck; the discharge port formed in the mower deck, through which mown grass cut by the blade is discharge from the mower unit to outside. A shutter operating tool for remotely operating the shutter moving mechanism to open and close the shutter is provided in the operation part. The lock mechanism is remotely operable from the operation part.02-11-2010
20100019539Work Vehicle - A work vehicle includes a vehicle body frame extending in the fore/aft direction, the vehicle body frame including a front frame and a rear frame disposed rearwardly of the front frame, a passenger's section provided on the vehicle body frame, a driver's seat disposed on the front side of the passenger's section, and a drive unit including an engine, the drive unit being disposed downwardly of the rear frame. A rear portion of a rear seat disposing space provided rearwardly of the driver's seat is overlapped with an upper side of the rear frame. A rear seat disposed in the rear seat disposing space is selectable in its posture between a first posture where the upper side of the rear frame is opened up to allow visual inspection of the drive unit and a second posture where the rear seat is positioned on the upper side of the rear frame to cover the drive unit.01-28-2010
20100006789Operating Device for Control Valve - An operating device with an operating lever for a control valve includes: an input member connected to the operating lever; an output member connected to a slide spool of the control valve; and a swing link for relaying a displacement of the input member to the output member. The swing link is swingable about a swing shaft center on one end and is connected to the input and output members. A latch portion in the swing link is farther than a connecting point with the output member from the swing shaft center. A lock body is switchably operable between a lock position and a release position, and at the lock position, engaged with the latch portion at a neutral position to limit a swing of the swing link about the swing shaft center by which the control valve is locked at a neutral state.01-14-2010
20100003117Skid Steer Loader - A skid steer loader comprises: a main frame assembly (01-07-2010
20100001571Driver's Seat of Work Vehicle - A driver's seat of a work vehicle comprising a seatback section, and a seating section including a receiving surface portion formed in an intermediate portion of the seating section for receiving buttocks of the operator, and a recessed groove formed along a side frame portion at a boundary between the side frame portion and the receiving surface portion to open at an extension distal end of the seating section. The recessed groove has a bottom surface inclined downwardly from a back end of the seatback section to the extension distal end of the seating section.01-07-2010
20090320433Mowed Grass Amount Detecting Apparatus for Grass Collection Container of Grass Mowing Machine - A mowed grass amount detecting apparatus for a grass collection container of a grass mowing machine is disclosed, into which container mowed grass mowed by a mower unit is charged through a conveying duct. The apparatus includes a pivotal sensor plate (12-31-2009
20090308038Rear Discharge Mower - A rear discharge mower comprising: a first shaft; a first blade that is rotated in unison with the first shaft; a second shaft that is configured to be rotated in a direction opposite from a rotational direction of the first shaft; a second blade that is rotated in unison with the second shaft, wherein a grass-clippings discharge path is formed through which grass clippings are discharged in a rearward direction from the area between the first shaft and second shaft; an enclosing casing that supports the blade shafts; and a power train that is accommodated in the enclosing casing and that transmits power to the first and second blade shafts.12-17-2009
20090299613Engine Speed Control System for Work Vehicle - The engine speed control system for a work vehicle has a foot accelerator controller for carrying out foot accelerator control based on a pedal sensor, a hand accelerator controller for carrying out hand accelerator control based on a lever sensor, a manually operated input device, storage means for storing a predetermined engine speed, and a constant rotation controller for carrying out constant rotation control in which the engine speed stored in the storage means is used as the target rotational speed on the basis of an input to the input device. The constant rotation control is carried out when the input device has been operated in the case that the engine speed that corresponds to the output of the lever sensor is greater than an idling speed, and the constant rotation control is terminated when the input device is operated in the case that the engine speed that corresponds to the output of the lever sensor is equal to or less than the idling speed.12-03-2009
20090293841Engine Speed Control System for Work Vehicle - An engine speed control system for a work vehicle comprises a pedal sensor (12-03-2009
20090293840Engine Speed Control System for Work Vehicle - An engine speed control system for a work vehicle is disclosed. Storage means (12-03-2009
20090285724Exhaust Device for a Diesel Engine - A flammable-gas led-out pipe (11-19-2009
20090282799Rear Discharge Type Mower Apparatus - A rear discharge type mower apparatus includes a blade housing, a support shaft supported by the blade housing, a rotatable blade supported by the support shaft, and a front guide plate having a shape extending substantially along the rotation path of a corresponding blade. The front guide plate forms an opening for ejecting cut grass rearwardly and has a downstream plate portion located in a downstream position with respect to a rotating direction of the corresponding blade and having an end defining one end of the opening. The downstream plate portion extends rearwardly of the blade housing and a distance from a center of rotation to the downstream plate portion is progressively decreased toward a rear end of the blade housing. At least a part of the downstream plate portion is located radially inside of the rotation path of the corresponding blade.11-19-2009
20090282797Lawn Mower with Grass Collecting Unit - A connecting mechanism (11-19-2009
20090280944Speed Change Transmission Apparatus - Disclosed is an apparatus including a stepless speed change device receiving an engine drive; a planetary transmission device for, by a plurality of planetary transmission mechanisms, combining an output from the stepless speed change device and the engine drive not subject to a speed change by the stepless speed change device; and a speed range setting device for outputting the drive combined by the planetary transmission device and divided into a plurality of speed ranges. The planetary transmission device, the speed range setting device and a forward-reverse changeover device are located forwardly of a rear end of an upstream transmission case portion. An electric motor may be used instead of the stepless speed change device.11-12-2009
20090270212Speed Change Transmission Apparatus - The apparatus includes a hydrostatic stepless speed change section 10-29-2009
20090266639Operating System For Tractor - An operating system for a tractor to which an implement is attachable, the operating system comprises: a steering wheel provided rearwardly of a hood that houses an engine located in a forward region of the tractor; a control panel provided rearwardly of the hood and adjacent the steering wheel; a center cover extending generally vertically below the steering wheel; an operation lever provided at a position laterally of the control panel; a valve unit with a pair of spools, the valve unit being located at a lower position with respect to the steering wheel and being covered by the center cover; a link mechanism that links the operation lever and the pair of spools, the link mechanism being covered by the center cover.10-29-2009
20090265082Engine Controller for Work Vehicle - An engine controller (10-22-2009
20090260339Grass Collector for a Mower - A grass collector adapted to be attached to a rear of a riding-type mower for receiving cut grass from a mower unit through a duct, the grass collector including a front container section having a rearwardly facing opening and adapted to be attached to the riding-type mower, the front container section carrying a first bottom plate having a substantially horizontal position. A rear container section is supported pivotably about a pivot point located in a rear upper region of the front container section and pivotable between a first position wherein the rear container section substantially covers the opening of the front container section and a second position pivoted from the first position to allow cut grass to fall, the rear container section having a second bottom plate having a substantially horizontal position.10-22-2009
20090252586Wheel Loader - A wheel loader having good operability. The wheel loader has a machine body travelably supported on wheels; a working device supported on the machine body, the working device having a boom swingably supported at its base end side on the machine body, an arm swingably supported at and connected to the forward end side of the boom, and a working tool swingably provided on the forward end side of the arm; travel operation means for performing travel operation of the machine body; and a brake for braking, when the travel operation means is not operated and the arm is swung, the wheels in operative association with the swing of the arm.10-08-2009
20090248258Operation Parameter Display System for Working Vehicle Fitted with Working Implement - An operation parameter display system for an working vehicle (10-01-2009
20090244106Display Device of Work Vehicle - A display device for a work vehicle, comprising: 10-01-2009
20090243831Display Device of Work Vehicle - A display device for a work vehicle having a work apparatus operated by an actuator, the device comprising: 10-01-2009
20090243338Operator's Section Construction for Work Vehicle - An operator's section construction for a work vehicle includes an operating device mounted on a vehicle body, a driver's seat mounted on the operating deck, a first operating device provided on one of right and left sides of the operating deck and a second operating device provided on the other of the right and left sides of the operating deck. On an upper face of the operating deck, there are formed a mounting portion for the driver's seat, a mounting portion for the first operating device, and a mounting portion for the second operating device; the driver's seat, the first operating device and the second operating devices being mounted on the respective mounting portions independently of each other.10-01-2009
20090242311Upper Assembly Structure of Work Machine - An upper assembly structure of a work machine comprising a driver's seat mounted on a vehicle body, an engine compartment for housing an engine, a tank compartment for housing a tank, a hood, a tank cover member, a first partition for partitioning between the engine compartment and the driver's seat, a second partition for partitioning between the tank compartment and the driver's seat, and a support frame mounted on the engine compartment including an arm member protruding from the support frame toward the tank compartment, wherein the engine compartment and the tank compartment are arranged to form an L-shape as viewed from the top, wherein the engine compartment is covered by the first partition and the hood, wherein the tank compartment is covered by the second compartment and the tank cover member, and wherein the arm member supports internal equipment arranged inside the tank compartment.10-01-2009
20090241702Work Vehicle - A work vehicle including: a body frame; an engine supported by the body frame through an elastic body; a belt transmission mechanism connected to an output shaft of the engine in a power transmissive manner; and a power takeoff (PTO) mechanism connected to the belt transmission mechanism in a power transmissive manner to take out power from the engine. A PTO support bracket configured to support the PTO mechanism is attached to the engine.10-01-2009
20090241501Mower Unit - A mower unit includes a housing, a pair of cutting blades arranged inside the housing, each of the cutting blades being rotatable about a respective vertical axis supported by the housing, the cutting blades being driven to be rotated in opposite directions, and a baffle arranged generally between rotation regions of the cutting blades to guide air flows generated by the cutting blades. The baffle defines an upper baffle portion located adjacent an upper region of the housing, a lower baffle portion located adjacent a lower region of the housing, and an air passage formed for allowing the air flows to flow between the upper baffle portion and lower baffle portion.10-01-2009
20090241498Dust Removal System for a Riding Lawn Mower - A dust removal system for a riding lawn mower, comprising an engine, a speed change device disposed outside of an engine compartment, and a universal coupling inserted through an opening provided to a separating wall in order to connect an output shaft of the engine and an input shaft of the speed change device. The dust removal system is composed of a perforated board which rotates integrally with the output shaft and around the axis of the output shaft in order to impede grass cuttings from flowing into the engine compartment through the opening, the perforated board having an insertion hole formed in the center to allow the universal coupling to be inserted; and a seal unit for substantially sealing the space between the universal coupling and the peripheral edge of the insertion hole. The seal unit has a radially extending flange formed on the universal coupling, and a ring member in which one end is mounted on the flange and the other end is in contact with the peripheral area around the insertion hole.10-01-2009
20090239706Work Vehicle Having Hydraulic Stepless Speed Changing Apparatus - A work vehicle includes a hydraulic stepless speed changing apparatus and a gear type speed changing apparatus operable to receive output from the hydraulic stepless speed changing apparatus to convert it into a plurality of stages of speed. A return oil passage connected to a high-pressure side circuit of the hydraulic stepless speed changing apparatus is connected to a hydraulic tank. The return oil passage incorporates an unload valve and a throttle valve, between which an operably coupling mechanism is provided. This operably coupling mechanism switches over the unload valve to an unload condition in response to an operational displacement of a brake operating member for operating a brake to its braking side.09-24-2009
20090236876Tractor - Provided are a vehicle body frame, a support frame that is erected on the vehicle body frame and that supports a hood, a steering wheel, a steering column that is erected on the vehicle body frame and that supports the steering wheel, an instrument panel, an operation panel that is provided below the steering wheel and that has a display window at a position facing the instrument panel, and a connecting member connected at one end to the support frame and connected at the other end to the steering column; wherein the instrument panel is mounted on the connecting member.09-24-2009
20090216411Power Take Off Control System - A power take-off (PTO) control system for a work vehicle equipped with an implement, comprising a hydraulic multi-plate PTO clutch (08-27-2009
20090212473Hydraulic Suspension System - A hydraulic suspension system includes a suspension base (08-27-2009
20090211215Grass Collecting Apparatus for Lawn Mower - A grass collecting apparatus for a lawn mower comprises a frame (08-27-2009
20090195049PICKUP-STYLE WORK VEHICLE - A pickup-style work vehicle comprises a driver's section, a loading floor that is located rearwardly of the driver's section and that can be moved to a dumping position, a loading floor size changeover mechanism that changes a size of the loading floor between a first state in which a front wall portion and a front bottom portion of the loading floor are moved forwardly in a fore-and-aft direction of a vehicle and a second state in which the front wall portion and the front bottom portion of the loading floor are moved rearwardly in the fore-and-aft direction, a fixing member connected to the vehicle, and partition member position change mechanism for changing the position of the partition member in the fore-and-aft direction of the vehicle between a forward position and a rearward position. The partition member when placed at the forward position is located immediately forwardly of the loading floor in the first state while the partition member when placed at the rearward position is located immediately forwardly of the loading floor in the second state.08-06-2009
20090195048PICKUP-STYLE WORK VEHICLE - A pickup-style work vehicle comprises a front driver's seat, a backseat, a loading floor that is located rearwardly of the backseat and that can be moved to a dumping position, a loading floor size changeover mechanism, and a backseat posture change mechanism. The loading floor size changeover mechanism changes the size of the loading floor between a first state in which a front wall portion and a front bottom portion of the loading floor are moved forwardly in a fore-and-aft direction and a second state in which the front wall portion and the front bottom portion of the loading floor are moved rearwardly in a fore-and-aft direction. The backseat posture change mechanism changes a posture of the backseat between a first posture which is a non-use state and a second posture which is a use state. The fore-and-aft dimension of the backseat in the first posture is less than a fore-and-aft dimension of the backseat in the second posture. the backseat in the first posture is located immediately forwardly of the loading floor in the first state and the backseat in the second posture is located immediately forwardly of the loading floor in the second state.08-06-2009
20090177022Cracking tube having helical fins - A cracking tube (07-09-2009
20090156345Speed Changing Transmission Apparatus - A composite planetary transmission section (P) is provided for synthesizing output from a stepless speed changing section (06-18-2009
20090152781Vibration-Isolating Device for Steering Wheel of Traveling Working Vehicle with Wheel Steering Mechanism - A vibration-isolating device for a steering wheel of a travelling working vehicle equipped with a wheel steering mechanism includes a first steering shaft (06-18-2009
20090149292Speed Change Transmission Device - The object is to simplify the construction of a speed change apparatus in which an engine drive force is speed-changed in a plurality of speed ranges and speed-changed steplessly in each speed range, with using a stepless speed change device (06-11-2009
20090134109Boom - A pivoted coupling member of a two-piece boom can be shared with standard booms. The boom comprises a first boom having, on the base end side, a pivoted coupling member that is pivotably coupled to a boom support section, and a second boom in which the base end side is pivotably coupled to the distal end side of the first boom and in which an arm is pivotably coupled to the distal end side. In the boom, the lateral width of the main body portion 05-28-2009
20090133950Wheeled Work Machine - A wheel type work machine having improved ease of assembly and a compact-sized traveling system power transmission mechanism. The wheeled work machine comprises a traveling body (05-28-2009
20090115225Cabin Apparatus for Moving Vehicle - A cabin apparatus for a work vehicle provided with rear axle cases, comprising: 05-07-2009
20090100952Speed Change Device for Traveling Vehicle - 1. A speed change device for a traveling vehicle comprising:04-23-2009
20090098319HEAT RESISTANT ALLOY ADAPTED TO PRECIPITATE FINE TI-NB-CR CARBIDE OR TI-NB-ZR-CR CARBIDE - A heat resistant alloy comprising, in % by weight, over 0.6% to not more than 0.9% of C, up to 2.5% of Si, up to 3.0% of Mn, 20 to 28% of Cr, 8 to 55% of Ni, 0.01 to 0.8% of Ti and 0.05 to 1.5% of Nb, the balance being Fe and inevitable impurities, the value of (Ti+Nb)/C being 0.12 to 0.29 in atomic % ratio. When the alloy further contains up to 0.5% of Zr, the value of (Ti+Nb+Zr)/C is 0.12 to 0.29 in atomic % ratio. When the alloy is heated at a temperature of at least about 800 degrees C., a fine Ti—Nb—Cr carbide or Ti—Nb—Zr—Cr carbide precipitates within grains to thereby retard creep deformation and give an improved creep rupture strength. The alloy is therefore suitable as a material for hydrogen production reforming tubes.04-16-2009
20090077839Backhoe Hydraulic System - A pilot pressure control valve V03-26-2009
20090066052Frame Structure for Work Vehicle - A work vehicle comprising a pair of left and right wheels; a vehicle body frame supported at least partially by the pair of left and right wheels; and a suspension provided between the pair of left and right wheels and the vehicle body frame, the suspension being a five-linkage type rigid axle suspension including: a pair of left and right upper arms and a pair of left and right lower arms for positioning the pair of left and right wheels in the longitudinal direction of the vehicle body, a lateral rod for positioning the pair of left and right wheels in the lateral direction of the vehicle body, a pair of left and right coil springs for absorbing shocks from the road, and a pair of left and right dampers for controlling the movements of the pair of left and right coil springs. An auxiliary frame is further provided for supporting the pair of left and right wheels, an engine, and a transmission device, wherein the auxiliary frame is suspended on the vehicle body frame via the suspension.03-12-2009
20090066046Wheeled Work Machine - A wheeled work machine in which the center of gravity of a machine body is positioned low and the stability of the machine in a working position is secured without regard to the movement of the center of gravity caused by the rotation of a rotation table during work. An operation body (03-12-2009
20090065279Drive Train for Work Vehicle - A drive train for a work vehicle comprises: an engine mounted to a vehicle body such that an output shaft of the engine extends in a lateral direction of the vehicle body; a hydrostatic transmission having a pump shaft, a motor shaft, and a housing, the hydrostatic transmission being mounted to the vehicle body such that the pump shaft and the motor shaft extend in the lateral direction; a mechanical transmission having a plurality of transmission shafts each of which extends in the lateral direction. A pump side portion of the housing of the hydrostatic transmission is connected to an end plate of the engine and a motor side portion of the housing is connected to a casing of the mechanical transmission so that the housing extends from the engine to the mechanical transmission.03-12-2009
20090064947OIL-COOLED ENGINE - An oil-release space (03-12-2009
20090056964Swivel Work Machine - A swivel work machine comprises: a travel device; a swivel base provided on the travel device; a swivel base provided in the front of the travel device; a dozer provided to the travel device; a swing control; a dozer control; a tilt control member provided to the dozer control, an actuation of the tilt control member causing the dozer to be pivoted about the tilt pivot shaft; a controller having a swing control mode in which an actuation of the swing control causes the implement to be pivoted laterally, and an angle control mode in which an actuation of the swing control causes the dozer to be pivoted about the angle pivot shaft; and a mode change-over portion for switching a control mode of the controller between the swing control mode and the angle control mode.03-05-2009
20090044652Neutral Hold Device for Hydrostatic Continuously Variable Speed Change Device - A neutral hold device for a hydrostatic continuously variable speed change device having a trunnion shaft, comprising a first member which rotates integrally with the trunnion shaft and in which a cam having a concave part is formed; a second member that pivots about a support shaft provided parallel to the trunnion shaft, and that is provided with a cam follower for engaging with the cam; a spring for urging the cam follower against the cam so that the trunnion shaft is retained in a neutral position by the cam follower being positioned in a set position of the cam by the urging of the spring; and auxiliary urging means for generating an auxiliary urging force for urging the trunnion shaft toward the neutral position while the trunnion shaft is positioned in a proximate region of the neutral position set in advance.02-19-2009
20090044522EXHAUST DEVICE FOR A DIESEL ENGINE - The present invention has an object to provide an exhaust device for a diesel engine capable of surely burning flammable gas in an exhaust route.02-19-2009
20090020975Suspension Structure for a Work Machine - An arrangement is provided in which the durability of an operation changing means is improved when this means is provided to the suspension mechanism in a suspension structure for a work vehicle. A maximum position (A01-22-2009
20090013942Cooling Structure for a Work Vehicle - A cooling structure for a working vehicle with a transmission disposed rearwardly and downwardly of a driver's seat and having a hydrostatic transmission, and an air-cooled engine disposed rearwardly of the transmission. The cooling structure comprising a fan for cooling the engine and a fan for cooling the transmission mounted on a rotary shaft operatively connecting the transmission with an output shaft of the air-cooled engine, the fans being configured such that air flows generated by the fans move from adjacent the transmission toward the engine; an oil cooler for cooling fluid supplied to the hydrostatic transmission, the oil cooler being disposed between the fan for cooling the engine and the fan for cooling the transmission, and disposed to face each of the fans; and an air guiding plate disposed at a position higher than the oil cooler for guiding air to regions of the fans.01-15-2009
20090005219Work Vehicle - A work vehicle operable in a rearward facing position using a simple construction is disclosed. The work vehicle includes a hydrostatic stepless change speed device for transmitting power from an engine to a traveling device, a change speed pedal mechanism operable in a forward facing position for changing speeds in the hydrostatic stepless change speed device, and a travel-control lever provided at a rear position of a vehicle body and operable in the rearward facing position. The travel-control lever and the change speed pedal mechanism are linked to each other through a mechanical interlocking mechanism so as to control the hydrostatic stepless change speed device by the travel-control lever through the change speed pedal mechanism.01-01-2009
20080302805Fuel Tank for Work Vehicle - A work vehicle has a plurality of wheels including a first wheel and a fuel tank disposed upwardly of the first wheel. The fuel tank includes a first portion which is located higher than the highest point of the first wheel in a side view and which also is overlapped at least partially with the first wheel in a top view; a second portion disposed forwardly of the highest point of the first wheel and extending downwardly from the first portion so as to extend lower than the highest point of the first wheel, the second portion being in fluid communication with the first portion; and a third portion disposed rearwardly of the highest point of the first wheel and extending downwardly from the first portion so as to extend lower than the highest point of the first wheel, the third portion being in fluid communication with the first portion.12-11-2008
20080302077Device for limiting lowering of implement on working vehicle - A working vehicle includes a vehicle body supported by a plurality of wheels; an implement supported by the vehicle body via a link mechanism such that the implement can be raised and lowered, the implement being permitted to be lowered under its own weight; an abutting member that moves in tandem with the raising and lowering movement of the implement; a receiving piece for limiting the lowering of the implement under its own weight by receiving a first portion of the abutting member; and a manually operable first operating piece for changing the position of the receiving piece between a receiving position and a retracted position, wherein a lowering limiting position is set to a vertical position that is closer to the upper limit of a range of the raising or lowering movement of the implement than to the lower limit of that range.12-11-2008
20080296468IGNITION SWITCH DEVICE - An ignition switch device is provided with a switching means 12-04-2008
20080296032Operating Apparatus for Work Vehicle - An operating apparatus for a work vehicle with a detachable implement provided with a hydraulic actuator, comprising:12-04-2008
20080295553IGNITION SWITCH DEVICE - An ignition switch device is provided with a switching means 12-04-2008
20080295552IGNITION SWITCH DEVICE - An ignition switch device 12-04-2008
20080289310Lawn Mower With Grass Striping Mechanism - The lawn mower includes a vehicle body supporting front and rear wheels and a mower unit suspended from the vehicle body between the front and rear wheels by front and rear links. The links are movable to raise and lower the mower unit. A grass striping mechanism is associated with the vehicle body. The mechanism includes a stay arm connected to the mower unit and a roller support member movably connected to the stay arm so that the member is capable of movement in a vertical direction. A grass striping roller is rotationally supported by the roller support arm. A lift link is pivotally connected to the vehicle body and is associated with the roller support member. The lift link interfaces with the rear link such that upward movement of the rear link imparts movement to the lift link and roller support arm to lift the roller from the ground.11-27-2008
20080276589Lawn Mower - A lawn mower, comprising a vehicle body that is supported by a plurality of wheels; a support frame that is connected to a rear part of the vehicle body; a grass collector that is supported on the support frame so as to be pivoted between a grass collecting position and a discharge position about an axis oriented in the transverse direction of the vehicle body, the grass collector having a bottom surface; a swiveling body that is connected to a rotating shaft of the grass collector to be rotated in unison so as to switch the grass collector between the grass collecting position and the discharge position; and a cylinder connected to the swiveling body and to the support frame; wherein the swiveling body and the cylinder are disposed below the grass collector in the grass collecting position, and the cylinder extends along the bottom surface of the grass collector.11-13-2008
20080276588Rear Discharge Mower - A rear discharge mower comprising: a first shaft; a first blade that is rotated in unison with the first shaft; a second shaft that is configured to be rotated in a direction opposite from a rotational direction of the first shaft; a second blade that is rotated in unison with the second shaft, wherein a grass-clippings discharge path is formed through which grass clippings are discharged in a rearward direction from the area between the first shaft and second shaft; an enclosing casing that supports the blade shafts; and a power train that is accommodated in the enclosing casing and that transmits power to the first and second blade shafts.11-13-2008
20080252102Vehicle with Cabin - A vehicle with a cabin comprises a vehicle body supported by a plurality of wheels; a cabin bracket supported by the vehicle body; an elastic member for supporting the cabin, disposed between the cabin and the cabin bracket; and a weight member attached to a plate-shaped member of the cabin.10-16-2008
20080238153Duct Positioning for Switching Valve for Tractors - The present invention provides a tractor, comprising: a vehicle body that is supported by a plurality of wheels; a switching valve that is disposed rearwardly of a vicinity of a rear end of a driver's station floor as viewed from above; a duct connecting member that is positioned at the front end of the driver's station floor and provided with a plurality of duct connecting ports; and a plurality of metal ducts that connect the switching valve and the duct connecting member below the driver's station floor, wherein the metal ducts are positioned on a laterally outer side of a portion, that is located below the driver's station floor, of a pedal arm for an operation pedal, the pedal arm being disposed at a front portion of the driver's station floor.10-02-2008
20080238147Work Vehicle - A work vehicle includes a front loader mounted at a front portion of the work vehicle to be vertically pivotable, a driving control device, and a canopy device for covering the driving control device from above, the canopy device including a roof disposed upwardly of the driving control device and a support body for supporting the roof. The roof includes a front visor portion which projects, in a plan view thereof, to a position same as or more forwardly of a front end portion of the driving control device. To a lower face of said front visor portion, there are attached a pair of right and left front illumination lamps, and there is provided an upper concave portion at the right/left center thereof. A lower face of the upper concave portion is formed as an inclined face which is inclined upward from a rear portion to a front edge of the front visor portion so as to be located at a higher position than the attaching position of the front illumination lamps.10-02-2008
20080236125Climb-Up Assist Structure for Mower Unit - A mower unit configured to be supported to a work vehicle at a position between front wheels and rear wheels, comprises a mower deck; at least one blade supported by the mower deck; a climb-up assist member in which an inclined surface is formed for assisting the wheels in climbing over the mower unit; and a connecting device for detachably connecting the climb-up assist member to the mower unit in a service position in which the inclined surface assists the wheels in climbing over the mower unit.10-02-2008
20080221775MULTI-CYLINDER ENGINE - The present invention concerns a multi-cylinder engine comprising a throttle body (09-11-2008
20080214351Speed-Change Transmission Apparatus - A speed-change transmission apparatus for effecting a speed-changing on an engine drive force with utilizing a continuously variable speed-change device, a plurality of planetary transmission mechanisms and a plurality of clutches is constructed to be capable of effecting the speed-changing operation smoothly, regardless of a centrifugal force generated in the clutches. An output from the continuously variable speed-change device and a drive force from the engine are combined by a planetary transmission section. The drive force from this planetary transmission section is transmitted via a clutch section to an output shaft. First, second, third and fourth clutches of the clutch section are configured to be switched over respectively between an engaged condition and a disengaged condition, as clutch members are engaged with or disengaged from output side rotational members.09-04-2008
20080202779Rear Implement Mounting Frame Construction for Tractor - A rear implement mounting frame construction for a tractor is disclosed. The construction comprises a pair of mounting frames attached respectively to right and left sides of a tractor body. Each of these mounting frames comprises a plate member having a plate thickness oriented along the right/left direction. Each mounting frame also includes a case mounting portion that is connected to a rear axle case of the tractor body and a vertical connecting portion formed rearwardly of the case mounting portion which connects a rear implement. A bent portion formed between the case mounting portion and the vertical connecting portion causes the vertical connecting portion to be disposed closer to the tractor body than the case mounting portion. A right/left distance between the vertical connecting portions is set smaller than a right/left distance between the case mounting portions.08-28-2008
20080202106EXHAUST DEVICE FOR A DIESEL ENGINE - An exhaust device for a diesel engine supplies liquid fuel (08-28-2008
20080202089Riding-Type Mower Vehicle - A riding-type mower vehicle comprises a mower supported by a vehicle body; a grass collector configured to receive cut grass cut by the mower; a vehicle-side connector located at a rear position of the vehicle body and having a pair of inclined guide portions that face each other such that a distance between the inclined guide portions decreases toward lower portions of the inclined guide portions to open upwardly; and a collector-side connector provided to the grass collector to extend generally downwardly and having a pair of inclined guided portions whose distance from each other decreases toward lower portions of the inclined guided portions; wherein the collector-side connector is attached to the vehicle-side connector by inserting an inclined guided portion of the collector-side connector between the pair of inclined guide portions of the vehicle-side connector.08-28-2008

Patent applications by KUBOTA CORPORATION