| MAKITA CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20120132181 | MOTOR-DRIVEN IMPLEMENT HAVING SWITCHABLE SUMMER-WINTER OPERATING FUNCTION - A motor driven implement having an internal combustion engine having at least one cylinder and at least one carburettor, which is disposed in a carburettor chamber, which is separated by an intermediate wall from an engine compartment, wherein a fan wheel is further provided by which means air from the engine compartment can be introduced through an engine compartment opening in the intermediate wall into the carburettor chamber. A warm air opening is provided in the intermediate wall, through which the air heated over the cylinder can be introduced into the carburettor chamber and wherein an adjusting element is provided which can be brought into a summer position in which the engine compartment opening is open and the warm air opening is closed and which can be brought into a winter position in which the engine compartment opening is closed and the warm air opening is open. | 05-31-2012 |
| 20120132180 | MOTOR-DRIVEN IMPLEMENT HAVING IMPROVED CARBURETTOR PREHEATING - A motor-driven implement such as a hand-held tool or device for garden and landscape maintenance, includes an internal combustion engine having at least one cylinder and at least one carburettor, which is disposed in a carburettor chamber, is separated by an intermediate wall from an engine compartment. A housing is provided which at least partially encloses the engine compartment so that an upper part of the cylinder extends in the direction of the housing, and a fan wheel is further provided by which means air from the engine compartment can be introduced through a warm air opening in the intermediate wall into the carburettor chamber. For the motor-driven implement to have an improved carburettor pre-heating which enables easier operation, it is proposed that the warm air opening is disposed in the area of the intermediate wall which is disposed adjacently to the upper part of the cylinder. | 05-31-2012 |
| 20120132170 | STARTING DEVICE FOR AN INTERNAL COMBUSTION ENGINE - A starting device for an internal combustion engine includes a pulley mounted rotatably in a housing which can be set in rotation by a tension means to produce a drive torque for a motor shaft by a starter handle and which is connected to an engaging member by a damping spring. The drive torque is transmitted to the motor shaft to start the internal combustion engine, whereby under torsion of the damping spring, a twisting of the pulley against the engaging member is rendered possible until a stop element impacts against a counter-stop to delimit the twisting, which enables a high operational readiness of the starting device. In the case of a defect of the damping spring, the stop element and/or the counter-stop is formed from a material which has a higher strength than the material of the engaging member and/or the material of the pulley. | 05-31-2012 |
| 20120131803 | CUTTING MACHINE - A cutting machine providing excellent usability and facilitating installation of a battery pack is provided. The cutting machine includes a handle provided on a housing accommodating a motor, and a cutting blade operated by the motor driven by the battery pack which is a drive source. An insert receiving member is formed in the housing at the rear of the handle, and has an open top end allowing the battery pack to be inserted and installed therein from above. The insert receiving member is integrally joined to the handle. | 05-31-2012 |
| 20120129436 | POWER TOOL - An improved hand-held power tool is provided which can effectively reduce whirling vibration caused by imbalance of a rotating element. The power tool has a grip that is connected to a tool body and designed to be held by a user and a self-synchronous mechanism that reduces whirling vibration caused in the tool body or the grip when the tool bit is driven. The self-synchronous mechanism is of a phase variable type, having a rotating body which serves as a vibrator and is rotationally driven by a driving source different from a driving source for the tool bit. The self-synchronous mechanism is disposed in the tool body or the grip in which whirling vibration is caused, and arranged such that a phase of vibration of the rotating body is automatically tuned to a phase of the whirling vibration, thereby reducing the whirling vibration. | 05-24-2012 |
| 20120129435 | ROTARY TOOL - A hand-held rotary tool is provided which can offer improved usability while realizing reduction of vibration of a tool body. The rotary tool has a tool body, a drive shaft disposed in the tool body, a driven shaft to which a tool bit is attached, an Oldham's coupling that transmits rotation of the drive shaft to the driven shaft, and an elastic element disposed between the driven shaft and the tool body. The driven shaft is prevented from moving in a longitudinal direction of the driven shaft relative to the tool body and allowed to move in a direction transverse to the longitudinal direction of the driven shaft relative to the tool body. During this relative movement, power transmission from the drive shaft to the driven shaft is maintained via the Oldham's coupling. The elastic element absorbs the movement of the driven shaft relative to the tool body. | 05-24-2012 |
| 20120125170 | CUTTING MACHINE - A cutting machine includes a housing accommodating a motor. In the housing, a cutting blade, an air duct, a dust collecting channel and a shutter member are provided. The cutting blade is operated with the driven motor to cut a workpiece, and the air duct allows cooling air generated by a cooling fan for the motor to be blown out onto a cutting place of the workpiece. The dust collecting channel has an opening at one end for serving as a dust collecting port located near the cutting place and an opening at the other end for permitting coupling of a dust collecting nozzle. The shutter member is movable between a closed position and an open position of the air duct and located in the open position in a normal state. | 05-24-2012 |
| 20120118598 | IMPACT TOOL - An impact tool includes a motor, a rotating shaft rotationally driven by the motor, a swinging member that swings in the axial direction of a tool bit by rotation of the rotating shaft a tool driving mechanism that is connected to an end region of the swinging member in a direction transverse to the axis of the rotating shaft, and is caused to rectilinearly move in the axial direction of the tool bit by swinging movement of the swinging member thereby rectilinearly driving the tool bit, and a vibration reducing member for reducing vibration caused in the axial direction of the tool bit during operation of the tool bit. The vibration reducing member is disposed on an opposite side of a rectilinear working axis of the tool bit from the rotating shaft and connected to a connecting part between the swinging member and the tool driving mechanism in such a manner as to be driven. | 05-17-2012 |
| 20120118122 | FALL-OUT PREVENTING STRUCTURE FOR FIXING DEVICE OF GUARD MEMBER IN CUTTING MACHINE - A guard member for a rotary blade of a tabletop cutting machine is attached with a fixing device. The fixing device may be loosened, for example, during a maintenance operation. The fixing device can be prevented from falling out of the table cutting machine through the use of a fall-out preventing device. | 05-17-2012 |
| 20120111915 | DRIVING TOOL - An improved driving tool is provided which can prevent malfunction in detection of the number of fasteners remaining in a magazine. A representative driving tool includes a driving member for driving fasteners and a magazine for storing the fasteners. The driving tool further includes a driving tool actuation control member that can be switched between an actuating position and a deactuating position, and a retaining member that can be switched between a retaining position and a releasing position. The retaining member is switched from the retaining position to the releasing position according to the number of remaining fasteners in the magazine and the driving tool actuation control member is switched from the actuating position to the deactuating position when the retaining member is switched to the releasing position. | 05-10-2012 |
| 20120108154 | DISC GRINDERS - A disc grinder includes a grinding wheel cover rotatably mounted to a gear housing about an axis of a spindle. A stopper device can restrict a position adjustable range of the grinding wheel cover of the spindle and includes a first stopper on the side of the grinding wheel cover and a second stopper on the side of the gear housing. The first stopper and the second stopper have stopper surfaces for contacting with each other. An impact absorbing device can absorb an impact produced when the stopper surfaces contact with each other. | 05-03-2012 |
| 20120104992 | ELECTRIC POWER TOOL SYSTEM - An electric power tool system comprises a tool main body, a battery pack detachably attached to the tool main body, and a first charger that charges the battery pack. The first charger comprises a rechargeable battery that supplies current to at least one rechargeable battery of the battery pack. The at least one rechargeable battery of the first charger preferably has a larger charge storage capacity than the at least one rechargeable battery of the battery pack. | 05-03-2012 |
| 20120104991 | ELECTRIC POWER TOOL SYSTEM - An electric power tool system comprises a tool main body, a battery pack detachably attached to the tool main body and a first charger that charges the battery pack. The first charger is detachably attached to the tool main body and/or the battery pack. The first charger is capable of charging the battery pack while the battery pack is attached to the tool main body. The first charger is preferably cordless and contains at least rechargeable battery for storing energy to charge the battery pack. | 05-03-2012 |
| 20120103720 | ENGINE - An object of the present invention is to provide a muffler mounting structure configured to be able to prevent fastening parts from slackening by reducing the thermal conductivity from an exhaust port to the muffler mounting bosses and an engine including the muffler mounting structure. An engine of the present invention | 05-03-2012 |
| 20120100405 | RECHARGEABLE BATTERY PACK - A rechargeable battery pack attachable to a power tool includes a display element, a remaining capacity detection device, a remaining capacity display control device, an abnormality detection device, and an abnormality display control device. The display element is provided such that a lighted state thereof can be confirmed from outside. The remaining capacity detection device detects a remaining capacity of a rechargeable battery. The remaining capacity display control device displays the remaining capacity detected by the remaining capacity detection device by controlling the lighted state of the display element. The abnormality detection device detects an abnormality of the rechargeable battery. The abnormality display control device displays the abnormality of the rechargeable battery detected by the abnormality detection device by controlling the lighted state of the display element to an abnormality display state, which is different from a remaining capacity display state controlled by the remaining capacity display control device. | 04-26-2012 |
| 20120098494 | BATTERY CHARGER - Female guide portions for slidingly attaching a battery pack are formed by integral molding of a case main body. Exposed step portions are formed on the female guide portions, which includes protruding portions as thin-walled portions by application from the outer side (the upper side) of a mold so as to reduce the thickness of a thick-walled resin portion. An opening communicating with the inner and outer side of the case is not provided, while the protruding portions are formed as thin-walled portions. Bottom surfaces of the exposed step portions are formed so as to be sloped with respect to the horizontal direction when the battery charger is placed on a horizontal base, and water dropped on the bottom surfaces can flow outside of the case due to the slope without remaining thereon. | 04-26-2012 |
| 20120097425 | POWER-SUPPLY CORD ARRANGEMENT STRUCTURE - A power-supply cord arrangement structure provided to an electrical equipment may includes a cord drawing hole that is formed in a housing of the electrical equipment and is configured to drawing a power-supply cord therethrough, and load support portions that are formed in the housing as a portion of the cord drawing hole and are configured to support a tensile load of the power-supply cord when the power-supply cord is pulled. The load support portions are oppositely asymmetrically formed in cord pulling directions. | 04-26-2012 |
| 20120096298 | BATTERY PACK - A tool battery pack can include a current detection element for detecting a discharge current or a charge current, a monitoring section for inputting a current signal of the discharge current or the charge current through the current detection element and for inputting voltage signals of each cell battery, and a control microcomputer for performing discharge control or charge control based on the signals from the monitoring section. Further, the tool battery pack is constructed such that the current signal through the current detection element is input to both the monitoring section and the control microcomputer, | 04-19-2012 |
| 20120091929 | DUTY RATIO CONTROL DEVICE, ELECTRIC POWER TOOL AND RECORDING MEDIUM - A duty ratio control device includes a duty ratio calculation unit and a parameter setting unit. The duty ratio calculation unit, when an acceleration manipulation is performed, calculates a control duty ratio per predetermined timing based on a value of at least one parameter so that a rotation speed of a motor mounted on an electric power tool reaches a target rotation speed corresponding to the acceleration manipulation. The control duty ratio is calculated to be larger as the value of the at least one parameter is larger. The parameter setting unit sets the value of the at least one parameter. The value of the at least one parameter set for a reacceleration manipulation is larger than the value of the at least one parameter set for an initial acceleration manipulation. | 04-19-2012 |
| 20120091159 | VALVE FOR AERATING AND VENTILATING A TANK - To create a valve for aerating and ventilating a tank comprising a closing element, which is fixed against a valve seat in a closed state so as to form a seal and which is lifted out of the valve seat in an open state, wherein provision is made for a blocking element, which can be moved by means of the force of gravity, by means of which the closing element can be fixed at least in the closed state, which overcomes the disadvantages of the state of the art, which ensures a reliable function even in response to a use under rough conditions with impact loads and which is designed in a simple manner, it is proposed for the blocking element to be accommodated on the closing element so as to be movable. | 04-19-2012 |
| 20120085560 | ELECTRIC POWER TOOL SUSPENDING ATTACHMENT AND ELECTRIC POWER TOOL EQUIPPED WITH THE SAME - A suspending attachment attached to a cylindrical housing of an electric power tool whose output shaft protrudes from a housing distal end includes a ring-shaped distal end portion fitted to the housing distal end, lower retaining portions of which front ends are connected to the distal end portion and extending rearward along a housing lower-half outer surface with a space through which the housing does not radially come off, one upper retaining portion of which a front end is connected to the distal end portion and extending rearward along a housing upper-half outer surface with a space from each lower retaining portion, through which the housing does not come off, a hook portion extending from at least one of rear ends of the lower and upper retaining portions rearward of the housing, and a connecting member coupling the lower and upper retaining portions over a housing rear surface. | 04-12-2012 |
| 20120080963 | ELECTRIC POWER TOOL - An electric power tool of the present invention includes a motor used as a drive source housed in a dual-separated type housing and includes a bearing support member that covers the outer circumferential surface of a bearing of the motor and supports the bearing from outside in the radial direction, and is configured such that the bearing and one end of the bearing support member in the axial direction are inserted in a tool component disposed coaxially, and a protruding portion that is the other end of the bearing support member and axially protrudes from the tool component is supported by receiving portions of a pair of housing parts. | 04-05-2012 |
| 20120080207 | ROTARY TOOLS - A rotary tool includes a drive device, a driven member configured to be rotatably driven by the drive device, a spindle rotatably supported within a housing, an impact attenuation mechanism disposed between the driven member and the spindle and transmitting rotation of the driven member to the spindle while an impact applied to the driven member being attenuated, and a driven member support bearing rotatably supporting the driven member, so that the driven member can rotate relative to the spindle. | 04-05-2012 |
| 20120079799 | ELECTRIC POWER TOOL - An electric power tool is provided that includes a motor as a driving source, a first operation switch, a first semiconductor switch, and a second semiconductor switch. The first operation switch is operated by a user to be turned ON/OFF. The first semiconductor switch, provided on a current path from the power source to the motor, includes at least one semiconductor switching device. When the first operation switch is OFF, the first semiconductor switch is turned OFF to interrupt the current path. When the first operation switch is ON, the first semiconductor switch is turned ON to close the current path. The second semiconductor switch is provided on the current path in series with the first semiconductor switch and includes at least one semiconductor switching device. The second semiconductor switch closes/interrupts the current path by being turned ON/OFF in accordance with an input control signal. | 04-05-2012 |
| 20120074600 | ELECTRICALLY ACTIVATED CARBURETTOR - In order to create an electrically activated carburettor for petrol engines with an air funnel for sucking in fuel from a fuel line leading into the air funnel which is connected to a fuel chamber and between fuel chamber and orifice in the air funnel a fuel jet for adjusting a fuel quantity that can be sucked in from the fuel chamber because of vacuum in the air funnel that can be flexibly adapted as carburettor more preferably for power implements, which overcomes the abovementioned disadvantages of the prior art and has a simple, sturdy construction which allows constant long-term behaviour, it is proposed that in series connection with the fuel jet at least two Tesla diodes are provided, between which a pumping chamber with a pumping unit is located. | 03-29-2012 |
| 20120073847 | RECHARGEABLE ELECTRIC TOOL - The present invention provides a rechargeable electric tool in which a battery pack detachably mounted to a mounting part, which is formed lower than an opening provided at a housing, wherein a seal member is held in the housing to seal between the opening and the battery pack mounted to the mounting part. A projection projecting toward the opening side is provided at the seal member, and a passing hole that penetrates the projection and the seal member and allows a lead line connecting an electric component accommodated on the opening side in the housing to the battery pack to pass therethrough is formed. | 03-29-2012 |
| 20120073077 | DUST COLLECTOR - A dust collector for suctioning dust includes: an electric motor for collecting dust; a power supply device that supplies electric power to outside; a parameter detection device that detects a parameter (hereinafter referred to as a “current parameter”) which changes depending on a state of a supplied current supplied by the power supply device; a determination device that determines whether or not a value of the current parameter detected by the parameter detection device satisfies a condition based on a threshold value stored in a first storage unit; and a current supply starting device that starts current supply to the electric motor when it is determined by the determination device that the value of the current parameter satisfies the condition. | 03-29-2012 |
| 20120068633 | VARIABLE SPEED SWITCH AND ELECTRIC POWER TOOL WITH THE VARIABLE SPEED SWITCH MOUNTED THERETO - A variable speed switch includes a switch main body portion which is accommodated in a housing of an electric power tool and mounted to the housing so as to be capable of relative movement, and a load sensor which is provided in the switch main body portion and capable of outputting an electric signal in proportion to the amount of distortion caused by a pressing force. The switch operating portion is mounted on the surface of the housing so as to be capable of relative displacement with respect to the housing and transmits a pressing force applied to the switch operating portion to the load sensor, with the maximum displacement amount of the switch operating portion being set to equal to or less than 5 mm. | 03-22-2012 |
| 20120067605 | STRIKING TOOL - A technique for improving the vibration-proof effect and usability of a handle is provided in an impact tool. An impact tool is provided which linearly drives a tool bit in an axial direction thereof to cause the tool bit to perform a predetermined hammering operation. The impact tool includes a motor, a striking mechanism part, that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body and is connected to the tool body via a vibration-proofing first elastic element so as to be movable in a direction transverse to the axial direction of the tool bit with respect to the tool body, and a handle which is designed to be held by a user and connected to an opposite side of the outer shell housing from the tool bit via a vibration-proofing second elastic element so as to be movable in the axial direction of the tool bit with respect to the outer shell housing. | 03-22-2012 |
| 20120066917 | CHAIN SAW - A linear motion mechanism comprises a second rotating shaft having an external thread portion | 03-22-2012 |
| 20120063856 | DUST COLLECTING DEVICE - It is an object of the invention to provide a technique which contributes to improvement of operability in a dust collecting device which is used with a power tool for performing an operation using an internal dust suction type bit and collects dust generated by operation. | 03-15-2012 |
| 20120061393 | POWER TOOL - A chain saw comprises an oil tank and an oil cap. The oil cap comprises a cap body and a valve member. The cap body may comprise a communicating path communicating an inside of the oil tank to an outside of the oil tank. The valve member may be attached to the cap body and covers the communicating path. The valve member may be a sheet-shaped portion made from elastomer. The valve member may comprise a bulging part and a projecting part. The bulging part may be curved in a dome shape. The projecting part may project from the bulging part and comprises a slit at its top portion. | 03-15-2012 |
| 20120061216 | SEAL STRUCTURE FOR SWITCH MECHANISM AND ELECTRIC POWER TOOL - A seal structure for a switch mechanism includes a switch disposed in a housing, an operating member protruding forward from the housing through an opening formed in the housing and configured to turn on or off the switch, a rubber cover attached to the operating member from a front-side of the operating member and having a rear end engageable with the opening, and a fixing cover fixed to the operating member from outside the rubber cover so as to integrate the rubber cover with the operating member. In this seal structure, the rubber cover seals gap between the opening and the operating member. | 03-15-2012 |
| 20120061117 | RECHARGEABLE ELECTRIC TOOL - The present invention provides a rechargeable electric tool in which a battery pack as a power supply slides in a battery holder formed in an end part of a housing. A bag-shaped waterproof cover covering the battery pack including a coupling part between the battery holder and the battery pack is formed by two divided covers which are separated to the front and rear sides in a slide attachment direction of the battery pack. Between the two divided covers, a coupling mechanism can be arbitrary operated in a coupling position or a coupling cancelling position. The coupling position is a position in which the divided covers are coupled to each other in an attached state where the coupling part and the battery pack are covered. The coupling cancelling position is a position in which coupling of the divided covers is cancelled. | 03-15-2012 |
| 20120061116 | ELECTRIC TOOL - A hand-held power tool has a tool body, a motor housed in the tool body and a grip part designed to be held by a user, and performs a predetermined operation on a workpiece by a tool bit rotationally driven by the motor. The power tool includes a clutch that transmits torque and interrupts torque transmission between the motor and the tool bit, a non-contact torque sensor that detects torque acting on the tool bit in non-contact with a rotation axis rotating together with the tool bit, and a clutch control system that controls coupling and decoupling of the clutch according to a torque value detected by the non-contact torque sensor. | 03-15-2012 |
| 20120061115 | POWER TOOL - A fixed operating knob is rotatably arranged on a chain saw body. The fixed operating knob comprises a knob body, a tab, a torsion spring, and a lock member. The knob body is rotatably attached to the chain saw body. The tab is attached to the knob body. The tab is attached so as to be capable of swinging between an operating position projecting from the knob body and a storing position stored in the knob body. The torsion spring biases the tab toward the operating position. When the tab moves to the storing position, the lock member retains the tab at the storing position against a biasing force of the torsion spring. | 03-15-2012 |
| 20120060790 | LUBRICATION STRUCTURE FOR FOUR-STROKE ENGINE - A lubrication structure for a four-stroke engine to lubricate driving parts by supplying oil stored in an oil tank provided separately from a crank chamber, using pressure fluctuation in the crank chamber, includes: a first circulating route to supply the oil from the oil tank to the crank chamber and return oil mist generated in the crank chamber to the oil tank; a second circulating route to supply the oil mist from the oil tank to a valve operating mechanism and return to the oil tank; a discharge passageway to discharge blowby gas contained during circulation of the oil from the second circulating route to a combustion chamber; and a partition wall to separate between the crank chamber and the oil tank. A central part of the partition wall is located vertically above a surface of the oil stored in the oil tank even if an engine body is tilted. | 03-15-2012 |
| 20120058384 | TOOL BATTERIES - A tool battery includes a plurality of battery cells and a holder device. The holder device includes a pair of holder members and a plurality of lead plates mounted to each of the holder members. Each of the holder members has fitting portions for fitting with end portions of the battery cells. The lead plates are electrically connected to the corresponding electrodes of the battery cells. | 03-08-2012 |
| 20120055312 | BAND SAW HAVING ADJUSTABLE BLADE GUIDE - A band saw has a housing, a pair of wheels rotatably disposed on the housing, a drive unit connected to one of the wheel, a continuous band saw blade supported by the wheels, and a guide movably attached to the housing. The guide is positioned to contact with the band saw blade in a thickness direction of the band saw blade in order to restrict movement of the band saw blade in its thickness direction. | 03-08-2012 |
| 20120055311 | Support leg devices and cutting tools having the support leg devices - A cutting tool has a table for placing a workpiece thereon. A cutting unit is mounted to the table. A support leg device includes a support leg, an operation member and a motion conversion mechanism. The motion conversion mechanism is coupled between the support leg and the operation member, so that the movement of the operation member is converted into the movement of the support leg. | 03-08-2012 |
| 20120055310 | CUTTING MACHINE - One aspect of the invention includes, a cutting machine, such as a table-top circular saw having a table for placing thereon a workpiece, and a cutting machine body having a saw blade rotated by an electric motor. An insulation member may be attached to a tilt support shaft that vertically movably supports the cutting machine body relative to the side of a body support section constituted mainly by a table, so that conduction of a radio frequency current from the cutting machine body to the body support section is blocked. | 03-08-2012 |
| 20120055308 | GUIDE FENCE AND CUTTING MACHINE HAVING THE SAME - A front part of a guide section is made to be a detachable separate sub fence having a guide face, a face of the guide section to which the sub fence is fitted, is made to be a second guide face in parallel with the guide face rising from the top face of a table. The second guide face is in a plane in the rear of the guide face. | 03-08-2012 |
| 20120055302 | STRUCTURE FOR PREVENTING REMOVAL OF FIXING TOOL FOR SPLITTER IN CUTTING MACHINE - A table saw is provided having a splitter extending along the saw blade in order to prevent so-called kickback of a workpiece to be cut, which is caused by the rotating saw blade. | 03-08-2012 |
| 20120045678 | TOOL BATTERIES - A battery housing of a tool battery has a hook accommodation chamber and a battery cell accommodation chamber defined therein. A hook is accommodated within the hook accommodation chamber and is operable to lock and unlock the tool battery against a tool body of a power tool. Battery cells are disposed within the battery cell accommodation chamber. The hook accommodation chamber and the battery cell accommodation chamber are partitioned from each other. | 02-23-2012 |
| 20120045290 | ELECTRICAL POWER TOOLS - An electrical power tool may include a base capable of contacting the work-piece, a tool main body detachably attached to the base, and an elevating mechanism that is capable of changing a relative position of the tool main body to the base. The elevating mechanism includes a male elevating member that is releasably integrated with the tool main body, a female elevating member that is attached to the base and is capable of relatively raising and lowering the male elevating member, and an integrating mechanism that is capable of releasably integrating the male elevating member with the tool main body. The tool main body is capable of being removed from the base while the male elevating member is left in the base when the male elevating member is released from the tool main body by operating the integrating mechanism. | 02-23-2012 |
| 20120043102 | ELECTRIC POWER TOOL - In an electric power tool in which a metal front housing that accommodates a driving mechanism is assembled to the front of a main housing that accommodates a motor, an output shaft is protruded from the distal end of the front housing, and the outer periphery of the front housing is protected by a cylindrical transparent cover made of synthetic resin, a decorative pattern is formed on the inner surface of the transparent cover. The decorative pattern is formed of bumps and dips formed on the inner surface. | 02-23-2012 |
| 20120043101 | ELECTRIC TOOL WITH DUST COLLECTOR - A hammer drill includes a dust collector engaged with a housing by sliding. An engagement protrusion, which can engage and disengage with a rear engagement recessed portion provided on a guide groove of the housing, is provided at a position where the dust collector engages with the housing and biased in the direction of engagement with the rear engagement recessed portion. A front engagement recessed portion is also provided on the guide groove, and can engage with the engagement protrusion at a slide position of the dust collector in front of the engagement position. By engaging the engagement protrusion with the front engagement recessed portion, the dust collector can be fixed to the housing even at the slide position. | 02-23-2012 |
| 20120040793 | ELECTRIC TOOL - One aspect of the invention can include an electric screw tightening machine in which a speed change to a low-speed high-torque output state is automatically achieved in conjunction with increase in an external torque of a spindle. This output state is locked by a speed change lock mechanism, and this lock state is reset by an OFF operation of a switch lever. A speed changing device can be switched from a high-speed low-torque output state to a low-speed high-torque output stage. In the high-speed low-torque state, the second stage internal gear rotates together with a first stage carrier. The low-speed high-torque output state is caused as the second stage internal gear is disconnected from the first stage carrier so as to be restricted from rotating. | 02-16-2012 |
| 20120037392 | HAND-HELD TOOLS - A hand-held tool has an operation member operably coupled to a lock mechanism. The lock mechanism can lock and unlock the position of a cover that covers at least a part of an end tool. The operation member is positioned on an opposite side to a coupling device that movably couples the cover to a gear head device mounted to a tool body. | 02-16-2012 |
| 20120037385 | ELECTRIC POWER TOOL POWERED BY A PLURALITY OF SINGLE-CELL BATTERY PACKS - An electric power tool comprises a tool main body, a plurality of battery packs that is detachably attached to the tool main body, and a controller that controls discharges of the battery packs attached to the tool main body. Each battery pack comprises a memory device that stores characteristic data of the rechargeable cell. The controller accesses each of the memory devices of the battery packs and controls the discharges of the battery packs based upon the characteristic data stored in the memory devices. | 02-16-2012 |
| 20120034856 | DUST BOX AND ELECTRIC TOOL WITH THE DUST BOX - A dust box includes: an attachment portion configured to be attached to a dust-discharging nozzle extending from a housing of an electric tool; and a dust-collecting portion connected to the attachment portion and configured to store dust particles to be discharged from the nozzle. The dust-collecting portion mainly consists of a box which is made of synthetic resin and configured to be detachably connected to the attachment portion, and a paper bag received in the box and configured to store the dust particles to be discharged from the nozzle | 02-09-2012 |
| 20120031638 | POWER TOOL - A representative power tool according to the invention performs a predetermined operation on a workpiece at least by axial linear movement of a tool bit | 02-09-2012 |
| 20120024555 | IMPACT TOOL - Representative impact tool according to the invention includes a reaction force transmitting member | 02-02-2012 |
| 20120018330 | TOOL STORAGE BAG - A tool storage bag includes a hexahedral fabric bag body and openable only at a top side or at the top side and a bottom side, and an interlining material at least provided at three adjoining sides of the bag body. The interlining material includes plural flat plates corresponding to the three sides. At least one of the flat plates is detachable from a corresponding one of the sides of the bag body, while the bag body is foldable without folding the sides provided with the interlining material. The bag body with at least one flat plate detached from the corresponding side is folded down by overlapping, on one of the unfoldable sides of the bag body, the side other than the above one side and provided with the interlining material. | 01-26-2012 |
| 20120018183 | CLUTCH MECHANISMS FOR POWER SCREWDRIVERS - A synchronization mechanism of a clutch mechanism includes a drive side contact member and a driven side contact member provided on a drive side clutch member and a driven side clutch member of a clutch mechanism at positions radially inwardly of a drive side clutch portion and a driven side clutch portion, respectively. The driven side contact member does not contact the drive side contact member when the driven side clutch member is in a disengaging position. As the driven side clutch member moves from the disengaging position to an engaging position, the driven side contact member contacts the drive side contact member, so that the rotation of the drive side clutch member is transmitted to the driven side clutch member through frictional contact between the driven side contact member and the drive side contact member before the driven side clutch member reaches the engaging position. | 01-26-2012 |
| 20120017865 | LUBRICATING DEVICE FOR FOUR-STROKE ENGINE - A lubricating device for a four-stroke engine is provided that circulates oil while lubricating each part in a valve operating chamber and a crank chamber by supplying the oil to the valve operating chamber and the crank chamber using pressure fluctuation in the crank chamber, the pressure fluctuation being caused by reciprocating motion of a piston. The valve operating chamber is formed by mounting a valve operating chamber cover, and a suction passageway that sucks the oil in the valve operating chamber is provided by forming a groove on an inner surface of the valve operating chamber cover and sealing the groove with a sealing member shaped to fit the groove. | 01-26-2012 |
| 20120017735 | CUTTING TOOLS HAVING MOVABLE COVER MOUNTING STRUCTURES - A cutting tool includes a tool unit having a rotary cutting blade, a movable cover configured to cover the rotary cutting blade, and a rotary support member mounted to the tool unit and rotatably supporting the movable cover about a rotational axis. The rotary support member and the movable cover has contact surfaces that slidably contact with each other or slidably contact with contact surface of an intermediate member interposed between the rotary support member and the movable cover. At least one of the contact surfaces includes a groove formed therein, so that the groove can receive cutting powder or chips produced by the rotary cutting blade during a cutting operation and entering between the movable cover and the rotary support member. | 01-26-2012 |
| 20120013307 | ELECTRIC TOOL BATTERY - In an electric tool battery, even in a case where poor connection or the like is generated in the wiring between one voltage monitoring element and the cells, it is possible to monitor the voltages of the cells by another voltage monitoring element, so that it is possible to achieve an improvement in terms of the reliability of the electric tool battery against overcharge etc. The electric tool battery includes a plurality of cells connected in series and a plurality of voltage monitoring elements capable of doubly monitoring of the voltages of the individual cells at the time of charging and discharging, and a lead plate electrically connecting an electrode of the cell and an electrode of the cell has voltage signal extraction portions respectively corresponding to the voltage monitoring elements with the voltage signal extraction portions and the voltage monitoring elements being respectively connected to each other by different conductors. | 01-19-2012 |
| 20120013204 | ELECTRIC MOTOR - It is an object of the invention to secure an insulation distance between a stator and a rotor without reducing a region of a slot of a stator core in which a winding is installed. The representative electric motor includes a cylindrical stator core | 01-19-2012 |
| 20120012587 | LIQUID TANK FOR WORKING MACHINE ENGINE AND LIQUID TANK CAP - A liquid tank cap for a working machine engine is provided. The liquid tank cap opens and closes a filling opening of a tip end portion of a refilling pipe of a liquid tank. The liquid tank cap includes an upper wall that covers the filling opening, a fitting portion that engages with an inner surface of the filling opening and protrudes from the upper wall, and a peripheral wall that covers an outer circumference of the refilling pipe in a state where the liquid tank cap is attached to the filling opening. | 01-19-2012 |
| 20120012429 | INSTALLMENT STRUCTURE FOR BRAKING MECHANISM IN POWER TOOL - An output shaft of a motor is divided into a front shaft (first or second front shaft) and a rear shaft. The first front shaft is to be rotatably supported by a first shaft support plate connected directly to a motor housing. The second front shaft is to be rotatably supported by a second shaft support plate connected to the motor housing with a spacer provided between the second shaft support plate and the motor housing. A braking mechanism including a flange plate, a braking member and a biasing member is mounted to the second shaft support plate and the second front shaft. The first front shaft is used with the first shaft support plate to realize a power tool without the braking mechanism. The second front shaft is used with the second shaft support plate and the spacer to realize a power tool without the braking mechanism. | 01-19-2012 |
| 20120011730 | WORKING MACHINE ENGINE AND WORKING MACHINE USING THE SAME - A working machine engine is provided. The air flowing through the front side cooling air flow passage and the upper side cooling air flow passage which are provided in the front side and the upper side of the casing, respectively, and the air flowing through the auxiliary air flow passage provided in the back side of the casing join together near the opening. By this means, the air flowing through the auxiliary air flow passage can change the direction of the air flowing lengthwise through the front side cooling air flow passage and the upper side cooling air flow passage. | 01-19-2012 |
| 20120006573 | OIL PULSE ROTARY TOOL - An oil pulse rotary tool includes a motor, a speed reduction mechanism to which rotation is transmitted from the motor, and an oil pulse generator disposed in front of and coaxially with the speed reduction mechanism. The motor, the speed reduction mechanism, and the oil pulse generator are housed in a housing. A carrier portion is provided coaxially with the oil pulse generator to project from a rear portion of the oil pulse generator. Support shafts that support planetary gears provided in the speed reduction mechanism are fixed to the carrier portion. A bearing is provided between the planetary gears and the oil pulse generator to support the carrier portion. | 01-12-2012 |
| 20120000755 | ELECTRIC TOOL - An auxiliary switch has an operation portion and a switch body switching on and off by receiving the movement of the operation portion, and the operation portion is mounted to a left side surface, a right side surface of the housing covering a region between the motor and the main switch, the switch body is accommodate within a space of the housing positioned on the left side and the right side of the man switch, and a space is defined between the motor and the main switch within the housing due to the spaced positioning of the left or right auxiliary switch. | 01-05-2012 |
| 20120000684 | OIL PULSE ROTARY TOOL - A sleeve body with bearings interposed between the sleeve body and a center shaft portion is integrally coupled to an oil pulse generator. A coupling body is rotatable together with the output portion. Balls are fitted between an outer surface of the sleeve body and an inner surface of the coupling body. Cam grooves are L-shaped in plan view, and formed in a portion of the outer surface of the sleeve body at which the balls are fitted. Rotation of the output portion is transmitted from the coupling body to the sleeve body and the oil pulse generator via the balls. When rotational speed between the sleeve body and the coupling body is different, the balls relatively turn in the cam grooves to move the coupling body forward against an urging force of the coil spring so as to relieve an impact. | 01-05-2012 |
| 20120000683 | IMPACT TOOL - To ensure that a hammer can retract by a sufficient amount without interfering with a washer receiving a rear end of a coil spring, there is disclosed an impact driver having a washer receiving a rear end of a coil spring biasing a hammer of an impact mechanism to an advanced position. The washer is annular with an inner diameter larger than an inner diameter of an annular groove disposed on a rear surface of the hammer, and includes a frontward extended portion disposed at an inner circumference of the washer. Between a carrier portion of the spindle and the washer, there is disposed a positioner that positions the washer coaxially with the spindle. | 01-05-2012 |
| 20110315417 | ROTARY IMPACT TOOL - A rotary impact tool includes: a hammer rotating by receiving a rotational force of a motor; an anvil rotating by receiving a rotational force of the hammer; and an end tool attached to the anvil, the rotary impact tool being constructed such that when a torque of a value not less than a predetermined value is applied to the anvil from the outside, the hammer is disengaged from the anvil to rotate idle and applies an impact to the anvil in a rotational direction after rotating idle by a predetermined angle, the rotary impact tool including an impact detection means detecting impacts and a speed switching means switching the rotational speed of the motor, and when the impact detection means detects an impact during rotation of the anvil in a tightening direction, the speed switching means switches the rotational speed of the motor from a normal speed to a low speed. | 12-29-2011 |
| 20110315416 | LUBRICATION STRUCTURE FOR WORKING DEVICE - A lubrication structure for a working machine is provided that can evenly supply lubricant to a sliding contact surface between an eccentric cam and a crank member regardless of lubricant used and the use environment. A driven gear that engages with a driving gear connected to a driving source and rotates, is accommodated in a chamber in a case. An eccentric cam is provided on a surface of the driven gear, and connected to a coupling pin in a blade through a crank member. A fitting ring part is provided in one end of the crank member, and the eccentric cam is inserted into the fitting ring part so as to rotate relative to the fitting ring part. An annular groove is formed on the inner surface of the fitting ring part which faces the outer surface of the eccentric cam. The annular groove communicates with a first chamber via a first lubricating passageway and also communicates with a second chamber via a second lubricating passageway. The pressure in the first chamber is higher than that is the second chamber. | 12-29-2011 |
| 20110314987 | TABLE CUTTING MACHINE - Slide mechanisms arranged in two stages in the vertical direction are used for obtaining a long slide distance for a main body of a cutting machine. For the upper stage slide mechanism, there is adopted the slide mechanism of a pattern in which a slide bar is fixed. This allows the rearward installation space of the slide mechanism to be reduced, and ensures good visibility of the edge of a blade. | 12-29-2011 |
| 20110308830 | POWER TOOL - A power tool that performs a predetermined operation by using a tool bit and has a grip part and a dust suction device. The dust suction device has a dust suction part that extends in an axial direction of the tool bit and sucks and collects dust generated during operation at a tip of the tool bit, and the dust suction part can be moved between a first position in which the dust suction part covers a bit tip of the tool bit and a second position in which the bit tip is exposed. The dust suction device further has an operation mode switching mechanism that is capable of switching between a first operation mode in which the dust suction part is allowed to move between the first and second positions and a second operation mode in which the dust suction part is locked in the second position, and the operation mode switching mechanism is provided in a region of the grip part or its vicinity such that it can be operated with a user's hand holding the grip part. | 12-22-2011 |
| 20110308828 | POWER TOOL - A working tool in which a tip tool with a longitudinal shaft is linearly moved, wherein a motor and other tool constituting members are effectively cooled. In order to cool the inside of a motor-driven hammer comprising a main body, a motor, and a motion converter, the hammer is provided with a first cooling air passage through which a cooling air is supplied to the motor, and a second cooling air passage through which a cooling air is supplied to a hammer portion. To generate a cooling air to be supplied to the first and second cooling air passages, a cooling fan is provided at a lower portion of an output shaft of the motor and a hammer portion cooling fan is provided between the output shaft of the motor and the motion converter. | 12-22-2011 |
| 20110308485 | FOUR-STROKE ENGINE AND WORKING MACHINE USING THE SAME - A reduced size four-stroke engine and a working machine using the same are provided. A fuel tank is disposed in the space below a carburetor and an engine base is integrally formed with a fuel tank. By this means, the fuel tank is disposed in the space below the carburetor, and therefore the oil tank is not required to be disposed below the oil tank, so that it is possible to reduce the size. | 12-22-2011 |
| 20110308219 | PUSH MOWER - A push mower having a height adjustment lever, which can be manipulated easily, is provided. The provided push mower includes: a main body configured to move along a ground; a blade attached to the main body; a height adjustment lever attached to the main body; and a height adjustment mechanism configured to change a height of the blade from the ground based on a position of the height adjustment lever. The height adjustment lever includes: a pillar protruding from the main body; a grip fixed to the pillar; and a lock member attached to the grip and configured to move with respect to the grip between a lock position and an unlock position. A movement of the height adjustment lever is inhibited when the lock member is at the lock position, and the movement of the height adjustment lever is allowed when the lock member is at the unlock position. | 12-22-2011 |
| 20110297410 | ELECTRIC TOOL - In an electric disc grinder, there is provided, between a driven gear and a spindle in a torque transmission system, a C-shaped spring member capable of elastic deformation in a diameter enlarging direction. With respect to the rotating direction, the spring member is engaged with a driving protrusion of the driven gear and a driven protrusion of a joint sleeve of the spindle; when transmitting the rotation of the driven gear to the spindle, the spring member undergoes elastic deformation in the diameter enlarging direction depending on the driven side load, thereby mitigating the starting shock. An abutment surface of the driven protrusion is formed as an inclined surface causing an end portion of the spring member contacting with the abutment surface to slide radially outwards. As a result, the spring member can easily undergo elastic deformation in the diameter enlarging direction. | 12-08-2011 |
| 20110297407 | ELECTRIC HAMMER - In an electric hammer, ridges are provided in an outer surface of a barrel, grooves are provided in an inner surface of a front cover, and rotation of the front cover with respect to the barrel is prevented by fitting the ridges in the grooves. A flange, which is latched on a stepped portion provided in front of the ridges and the grooves in the inner surface of the front cover, is provided in a peripheral edge of a lock ring, and forward movement of the front cover is restricted by latching the flange on the stepped portion. | 12-08-2011 |
| 20110296697 | CUTTING TOOLS - A blade mounting device of a cutting tool includes a lock device and a blade guide. The lock device is configured to releasably lock a blade against a rod of a cutting tool. The blade guide is movable relative to the rod in an axial direction of the rod and is coupled to the lock device, so that the lock device locks and releases the blade in response to position of the blade guide in the axial direction. The blade guide has a guide recess having a bottom and capable of guiding and engaging the blade, so that the blade guide can be moved by the blade in the axial direction through engagement of the guide recess with the blade. The blade guide has a configuration other than a thin flat plate configuration. | 12-08-2011 |
| 20110290517 | IMPACT TOOL - A representative impact tool includes a bit holding device | 12-01-2011 |
| 20110284257 | ELECTRIC TOOL - An electric tool main body of an electric tool includes a battery retaining portion, and a battery includes a fitting portion capable of fitting with the battery retaining portion; the battery is connected to the electric tool main body through a sliding motion in a predetermined direction with respect to the electric tool main body in the state that the battery retaining portion is fitted with the fitting portion; the electric tool main body includes a connection prohibition portion prohibiting connection of other battery than the dedicated battery even if the battery is compatible with the rated voltage of the electric tool main body. | 11-24-2011 |
| 20110283857 | CUTTING TOOLS - A cutting tool includes a tool unit having a rotary circular blade, a movable cover mounted to the tool unit and having a cover body movable in a moving direction to cover and uncover a part of the rotary circular blade by the cover body, and a position adjusting mechanism configured to adjust the position of the cover body of the movable cover in an adjusting direction different from the moving direction. | 11-24-2011 |
| 20110283853 | DUST-COLLECTING DEVICES - A dust-collecting device of a cutting tool having a rotary cutter blade may include a dust-collecting container connected to a dust-collecting port of a stationary cover that covers an upper portion of the rotary cutter blade. The dust-collecting container includes a self dust-collecting mechanism that is capable of forcibly collecting cutting chips into the dust-collecting container. | 11-24-2011 |
| 20110273037 | BRUSHLESS DC MOTOR - A brushless DC motor includes a rotor having a shaft and a column-shaped magnet in which a through hole is formed at a center of the magnet in the axial direction for allowing the shaft to be inserted and also allowing resin to be filled in a space between an inner wall surface of the through hole and an outer surface of the shaft, wherein the inner wall surface of the through hole of the magnet and the outer surface of the shaft are formed into shapes which can prevent relative rotation of the shaft with respect to the magnet via the resin. | 11-10-2011 |
| 20110272264 | GRINDER - In a grinder, a terminal plate is projectingly provided on an upper surface of a controller. A connection portion, which accommodates a female terminal and includes a slit into which the terminal plate enters, is projectingly provided on a lower surface of a main body portion of a switch block. At the time of assembling of the switch block and the controller, the terminal plate that enters into the connection portion from the slit is inserted into and connected to the female terminal. First and second projections that cover a formation surface of the slit in the connection portion when the connection portion is inserted with and connected to the terminal plate are formed on the upper surface of the controller. | 11-10-2011 |
| 20110272203 | ELECTRIC WHEELED APPARATUS POWERED BY BATTERY PACKS - An electric wheeled apparatus comprises a main body, a drive wheel supported by the main body in a rotatable manner, an electric motor configured to apply torque to the drive wheel, a battery holder configured to removably receive a plurality of battery packs, and a circuit unit configured to electrically connect one or more battery packs attached to the battery holder to the motor regardless of a number of battery packs attached to the battery holder. | 11-10-2011 |
| 20110269336 | ELECTRICAL EQUIPMENT SYSTEMS - An electrical equipment system may include a battery for an electrical power tool, an electrical equipment except for the electrical power tool, and an adapter that is capable of electrically and mechanically connecting the battery and the electrical equipment. The adapter has a battery side connecting portion that is capable of being detachably connected to the battery and an electrical equipment side connecting portion that is capable of being connected to the electrical equipment. | 11-03-2011 |
| 20110269006 | ELECTRIC APPARATUS SYSTEMS - An electric apparatus system includes a tool battery usable as a power source for a power tool, an electric apparatus excluding a power tool, and a battery case capable of receiving the tool battery. The battery case is disposed on one side of the electric apparatus, so that the electric apparatus is stabilized in position by the battery case. The electric apparatus and the battery case are mechanically and electrically connected to each other. | 11-03-2011 |
| 20110268374 | TOOL STORAGE BAG AND TOOL STORAGE BAG SET - The purpose of the present invention is to provide a tool storage bag and tool storage bag set having versatility and to reduce manufacturing cost. The tool storage bag includes an inner tray that is disposed inside the tool storage bag and is in a shape of a box with a bottom and an open top to store a power tool. The inner tray is made of a fabric material. The inner tray is detachably disposed inside the tool storage bag where an outer surface of the inner tray is supported by an inner surface of the tool storage bag, or is detachably disposed with a positioning unit provided between the inner surface of the tool storage bag and the outer surface of the inner tray. | 11-03-2011 |
| 20110267747 | ELECTRICAL APPARATUS SYSTEM - An electrical apparatus system includes a tool battery used as a power source for an electrical tool, and an electrical apparatus having a battery-connecting portion configured to allow the tool battery to be electrically and mechanically connected thereto or disconnected therefrom. In a state in which the tool battery is electrically and mechanically connected to the battery-connecting portion of the electrical apparatus, the tool battery is exposed on a lower side of the electrical apparatus so as to support the electrical apparatus on an installation surface thereof as a base. | 11-03-2011 |
| 20110260414 | POWER TOOL - An effective technique is provided for rationally clamping and holding various kinds of tool bits which can be selectively replaced with each other and attached to the driving shaft, in a power tool | 10-27-2011 |
| 20110259623 | POWER TOOL - A technique is provided which improves durability in a power tool having a torque transmission device. The representative power tool has a torque transmission device | 10-27-2011 |
| 20110252936 | CUTTING DEVICES - A cutting device includes a cutting unit having a rotary blade, a table for placing a workpiece thereon, and a support device vertically movably supporting the cutting unit relative to the table. The cutting unit includes a blade case. The blade case covers an upper portion of the rotary blade and has a dust discharge member for discharging dust produced at a cutting region. The cutting device further includes a dust guide device disposed on at least one of an upstream side and a downstream side of the dust discharge member with respect to a flow of the dust. A position of at least a part of the dust guide device changes relative to the dust discharge member according to change of the vertical position of the cutting unit. | 10-20-2011 |
| 20110250780 | CONNECTING STRUCTURE OF TERMINALS - A connecting terminal structure allows providing additional terminals without an increase in the width of a battery pack and an electric apparatus. In a connecting terminal structure according to the present invention, a battery pack is provided with a plurality of terminals having different functions arranged in a sliding direction, and an electric apparatus is provided with a terminal to be connected to one of the plurality of terminals of the battery pack. Through relative sliding between the battery pack and the electric apparatus, before the terminal in the electric apparatus reaches the terminal in the battery pack, the terminal in the electric apparatus can pass through another terminal in the battery pack. | 10-13-2011 |
| 20110250476 | BATTERY PACKS - A battery pack includes a battery case, a cell assembly including a plurality of battery cells accommodated in the battery case, a circuit board disposed within the battery case, and a plurality of lead members electrically connecting between the circuit board and the battery cells. The lead members extend across at least one space positioned between the circuit board and the battery cells. | 10-13-2011 |
| 20110248062 | DRIVING TOOL - A technique is provided which contributes to improvement in workability in a driving tool. | 10-13-2011 |
| 20110247223 | RECIPROCATING CUTTING TOOLS - A reciprocating cutting tool includes a motion converting mechanism configured to convert rotation of a rotary member into a reciprocating motion of a slider coupled to a rod capable of mounting a blade thereon. The reciprocating cutting tool further includes a slider support mechanism including a first support mechanism and a second support mechanism disposed at different positions along a reciprocating direction of the slider and each supporting the slider such that the slider can move in the reciprocating direction. The first support mechanism includes a first member and a second member disposed on opposite sides of the slider in a holding direction perpendicular to the reciprocating direction and each slidably contacting the slider. | 10-13-2011 |
| 20110244274 | BATTERY PACKS - A battery pack includes a circuit board and a battery cell group disposed within a battery case. The battery cell group includes a plurality of cylindrical battery cells staggered from each other so that the battery cell group includes at least a first battery cell stage and a second battery cell stage. The first battery cell stage is positioned on the side of the circuit board. The second battery cell stage is positioned adjacent to the first stage on the side away from the circuit board. The first battery cell stage includes a first battery cell and a second battery cell positioned at opposite ends of the first battery cell stage and a central battery cell positioned between the first and the second battery cell. The central battery cell is spaced from the circuit board by a distance, so that the central battery cell does not interfere with the circuit elements of the circuit board. | 10-06-2011 |
| 20110240324 | VIBRATION INSULATING DEVICE FOR A HANDHELD WORK MACHINE - A vibration insulating device connects two members of a handheld work machine via a coil spring. One end of the coil spring is supported by a first supporting member fixed to one member, and the other end is supported by a second supporting member fixed to another member. At least one of the first and second supporting members includes a threaded groove that engages with the coil spring and a tool engaging portion that configured capable of being engaged with a general-purpose tightening tool. | 10-06-2011 |
| 20110240320 | ELECTRIC POWER TOOL, AND RECORDING MEDIUM - An electric power tool includes a tool element, an electric motor, a rechargeable battery, a fuel battery, a state measuring unit, and a control unit. The electric motor receives power supply to drive the tool element. The rechargeable battery is electrically connected to the electric motor and supplies power to the electric motor. The fuel battery is electrically connected to the rechargeable battery and charges the rechargeable battery. The state measuring unit measures a state of the rechargeable battery. The control unit controls charging of the rechargeable battery by the fuel battery at least based on the state of the rechargeable battery measured by the state measuring unit. | 10-06-2011 |
| 20110239474 | POWER TOOL WITH VIBRATION REDUCING MECHANISM - A power tool comprises a crank pin that is eccentrically rotatable by a motor about a rotational axis. A non-rotatable first slider is linearly reciprocated by the crank pin so as to linearly reciprocate a tool. An eccentric pin is disposed substantially diametrically opposite of the crank pin relative to the rotational axis and is eccentrically rotatable by the motor about the rotational axis. A non-rotatable second slider is linearly reciprocated by the eccentric pin in a substantially opposite phase from the first slider so that the second slider acts as a counterweight to the first slider in order to reduce vibrations at least in the direction of linear reciprocation. A rotatable component is rotatably driven by the motor about the rotational axis and has a center of gravity displaced from its rotational axis towards the eccentric pin so as to supplement the vibration reducing function of the counterweight. | 10-06-2011 |
| 20110239398 | DUST COLLECTING DEVICES - One aspect according to the present invention includes a fuel cell battery system including a fuel cell battery assembly and a fuel gas tank. A suction device is driven by a motor and capable of producing flow of air for collecting dust. The motor can receive the supply of power from the fuel cell battery assembly. The fuel cell battery system, the motor and the suction device are assembled within a case. | 10-06-2011 |
| 20110232933 | ELECTRICAL POWER TOOL - In a speed change device of an electrical power tool, a reset arm is provided separately from a switch lever, which arm is operated by a reset motor. Due to tilting motion of the reset arm, a lock ring can be returned to an unlocking position in which a second stage internal gear can be rotated, so that the speed change device can be rest to a high speed low torque mode. | 09-29-2011 |
| 20110232443 | CUTTER - The objective is to improve durability while making it possible to maintain an excellent cutting plane and feeling of use with a simpler configuration. Disclosed is a tabletop circular saw for which a main body equipped with a saw blade that is rotated by the driving of a motor is provided to be capable of vertical movement on a base on which a material to be cut is placed; the output shaft of the motor is provided parallel to a spindle of the saw blade; and an automatic torque adjustment mechanism, which is equipped with a drive pulley, a follower pulley, and a belt, and which automatically adjusts the torque transmitted from the output shaft to the spindle according to the load when the saw blade rotates, is provided between the output shaft and the spindle. | 09-29-2011 |
| 20110229283 | POWER TOOLS - A power tool includes a base and a drive unit movable relative to the base and having a spindle and a drive device for rotatably driving the spindle. The power tool further includes a movable member mounted to the base and movable in a first mode and a second mode. A first device is coupled between the movable member and the drive unit and moves the drive unit relative to the base when the movable member moves in the first mode. A second device is coupled to the movable member and is configured to fix the drive unit in position relative to the base when the movable member moves in the second mode. | 09-22-2011 |
| 20110227429 | POWER TOOL - A power tool in the form of an electric disc grinder has a driving motor for driving a grinding wheel that performs a grinding or polishing operation on a workpiece, a motor housing that houses the driving motor, a rear cover that is mounted to a rear end region of the motor housing and forms together with the motor housing a grip to be held by a user, and a power switch including an operating lever that extends longitudinally on both of the motor housing and the rear cover and is operated by gripping with a user's hand, and a switch part that is disposed within the rear cover and actuated by operation of the operating lever to control energization of the driving motor and connected to the operating lever through an opening. | 09-22-2011 |
| 20110226502 | ATTACHMENT DEVICE-EQUIPPED ELECTRIC TOOL - A hammer drill is provided with a connector equipped with a female terminal, movably between a connection position where the female terminal is located inside a plug-in port and a non-connection position where the female terminal is in retreat from inside the plug-in port. The hammer drill is also provided with a torsion spring that urges the connector toward the non-connection position. The connector is provided with a shutter portion that is located inside the plug-in port to close the plug-in port at the non-connection position and is in retreat from inside the plug-in port at the connection position. A dust collecting device is provided with a press rail that comes into abutment on the connector to move the connector to the connection position against the urging of the torsion spring as the dust collecting device is mounted. | 09-22-2011 |
| 20110226500 | IMPACT TOOL - In an upper surface of a crank housing is provided an inlet for grease which is configured to be openable and closable by a cap. A vibration damping mechanism, which includes a counterweight provided with a connecting pin loosely fitted in a connecting hole of an eccentric pin when the cap is attached, is mounted in the cap, whereby the vibration damping mechanism is allowed to be taken in and out of the crank housing through the inlet by attachment and detachment of the cap to and from the inlet. | 09-22-2011 |
| 20110226499 | DUST COLLECTING DEVICE AND ELECTRIC TOOL EQUIPPED WITH DUST COLLECTING DEVICE - A dust box joined to a dust collecting device is formed of a box body, and a lid body that is joined to the box body by a hinge and can open and close an opening of the box body, and a main filter and a pre-filter are attached to the lid body. | 09-22-2011 |
| 20110220378 | ELECTRIC TOOL - An electric tool includes a housing accommodating a motor, and a break device and an operational member to turn on and turn off a drive switch of the motor. The brake device includes a brake plate fixed to an output shaft of the motor, a brake member is capable of moving toward and away from the brake plate during rotation, and an urging unit urging the brake member toward an abutment position where the brake member abuts on the brake plate. The operational member is provided with a press member that comes into abutment on the brake member through an operation of turning on the drive switch of the motor and rotates the brake member in such a rotational direction as to move away from the brake plate against the urging of the urging unit. | 09-15-2011 |
| 20110214658 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a main body that drives the disk blade by an engine. A guard surface for repelling chips of a workpiece that scatter from the disk blade to below the main body is formed on the main body. The guard surface has an asymmetric shape with respect to a boundary that is a rotating plane of the disk blade. | 09-08-2011 |
| 20110214657 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and an engine that drives the disk blade, a filter through which air provided to the four-stroke engine passes, a carburetor that mixes fuel and the air that passed through the filter, a casing that houses the filter and the carburetor, at least one operation member that is operated by a user and connected to the carburetor via a link, and a shaft that is connected to the casing and supports the operation member in a swingable manner. A shaft receiving groove that supports the shaft is formed in the casing. | 09-08-2011 |
| 20110214547 | CUTTING TOOLS - A cutting tool includes a tool unit having a rotary cutting blade and a handle extending rearwardly from the tool unit, so that the handle can be grasped by a hand of an operator for moving the cutting tool. The handle includes a front end on the side of the tool unit, a rear end on the side opposite to the front end, a front region including the front end, an intermediate part, and a rear region including the rear end. The front region extends between the tool unit and the intermediate part. The rear region extends rearwardly from the intermediate part. The rear end is configured as a free end. At least the intermediate part and the rear region are curved toward the same direction. | 09-08-2011 |
| 20110214546 | CUTTING TOOLS - A cutting tool includes a tool unit including an electric motor, a fan and a rotary cutting blade. The fan and the rotary cutting blade are rotatably driven by the electric motor. A blower includes a blower duct introducing a flow of air produced by the fan toward a cutting point where a workpiece is cut by the rotary cutting blade. | 09-08-2011 |
| 20110214303 | CUTTING TOOLS - A cutting tool includes a tool unit including an electric motor, a rotary cutting blade rotatably driven by the electric motor, and a blade case covering at least apart of the rotary cutting blade. An electric component is disposed within the blade case at a position capable of being cooled by a flow of air produced by the rotation of the rotary cutting blade. | 09-08-2011 |
| 20110214302 | CUTTING TOOLS - A cutting tool includes a tool unit having an electric motor and a rotary cutting blade rotatably driven by the electric motor. The electric motor has a motor housing. The motor housing has a flattened cylindrical configuration, so that a horizontal length of the motor housing is shorter than a vertical length of the motor housing. | 09-08-2011 |
| 20110214298 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a four-stroke engine that drives the disk blade. By employing the four-stroke engine, exhaustion of unburned gas and fuel consumption can be reduced. The engine cutter is further provided with a filter through which air provided to the four-stroke engine passes, a carburetor that mixes fuel and the air that passed through the filter, and a casing that houses the filter and the carburetor. The filter and the carburetor are arranged to align on a straight line along a direction of flow of the air passing through the filter and the carburetor. | 09-08-2011 |
| 20110214297 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a main body that drives the disk blade. The main body comprises a four-stroke engine, an oil supplying opening from which engine oil is supplied, and an oil exhausting opening from which the engine oil is exhausted. In this engine cutter, the oil supplying opening and the oil exhausting opening are both disposed on one side of the main body where one end of a driving axis of the four-stroke engine is located. | 09-08-2011 |
| 20110214296 | ENGINE-DRIVEN CUTTER - A handheld engine-driven cutter is provided with a disk blade and a four-stroke engine that drives the disk blade, a filter through which air provided to the four-stroke engine passes, a carburetor that mixes fuel and the air that passed through the filter, a casing that houses the filter and the carburetor, and a filter bracket intervened between the filter and the carburetor, which guides the air having passed the filter to the carburetor. An oil separator is formed integrally with the filter bracket that protrudes out toward the carburetor. | 09-08-2011 |
| 20110209593 | TABLETOP CUTTER - A grip portion is provided so as to be movable between a non-operation position and an operation position in the axial direction, and only in the state in which it has been moved to the operation position, the rotating operation is effective, making it possible to lock and unlock a lock mechanism, while at the non-operation position, the grip portion idles so that the lock mechanism does not operate. | 09-01-2011 |
| 20110200426 | NOISE REDUCTION DEVICES FOR BLOWERS - A noise reduction device for a blower includes a noise reduction member. The noise reduction member has a noise reduction chamber and a noise reduction opening defined therein, so that a part of air flowing into, through or out of the blower can enter the noise reduction chamber via the noise reduction opening. | 08-18-2011 |
| 20110198103 | ELECTRIC TOOL POWERED BY A PLURALITY OF BATTERY PACKS AND ADAPTER THEREFOR - An electric power tool is powered by a plurality of battery packs connected in series. The electric power tool comprises a controller configured to receive signals outputted from the integrated circuits located in each of the battery packs. A first voltage level-shifter is disposed between the controller of the electric power tool and one of the integrated circuits of the battery packs. The first voltage level-shifter is configured to shift the voltage level of the signal outputted from the respective integrated circuit to the tool controller to an acceptable level for the controller. | 08-18-2011 |
| 20110197389 | ELECTRIC TOOL POWERED BY A PLURALITY OF BATTERY PACKS AND ADAPTER THEREFOR - An electric power tool comprises a main body supporting a tool and an electric motor housed in the main body for driving the tool. A plurality of first battery interfaces is configured to removably receive or attach a plurality of first battery packs and to electrically connect the plurality of attached first battery packs in series with the electric motor. A plurality of indicators is configured to communicate information concerning the respective conditions of the plurality of attached first battery packs. The plurality of indicators is arranged such that all of the indicators are simultaneously viewable by a user of the electric power tool. | 08-18-2011 |
| 20110187211 | ELECTRIC POWER TOOL - An electric power tool, which uses a DC brushless motor as a drive source and controls the DC brushless motor by a switching element, can include a tubular housing main body portion accommodating the DC brushless motor, and a grip portion protruding from a side portion of the housing main body portion. The switching element is arranged inside the grip portion, and is spaced apart from an electronic circuit board for an electronic component for operating the switching element. | 08-04-2011 |
| 20110186320 | ELECTRICAL POWER TOOL - An electrical power tool may include a speed change device that is capable of being automatically changed as an external torque applied to a spindle is increased. In a high speed low torque mode before an automatic speed change, an extremely high output rotation speed in which an output torque sufficient to progress the screw tightening operation to the end cannot be generated is set. The output rotation speed before the speed changing operation is set in a range of about 4.5 times to 6.0 times the output rotation speed after the speed changing operation. Thus, in an initial stage of the screw tightening operation, it is possible to quickly performing the operation with a high speed rotation than ever before. Conversely, after the automatic speed change, it is possible to complete the screw tightening operation with the large output torque. | 08-04-2011 |
| 20110186318 | MOTOR CONTROL DEVICE, ELECTRIC POWER TOOL, AND RECORDING MEDIUM - A motor control device includes a target value setting unit, a measuring unit, a deviation calculating unit, a proportional control unit, an integral control unit, and a disabling unit. The deviation calculating unit calculates a deviation between a target value, set by the target value setting unit, and a measured value for rotational speed, measured by the measuring unit. The disabling unit disables proportional control, performed by the proportional control unit, when the deviation, calculated by the deviation calculating unit, is a value within a predetermined range. | 08-04-2011 |
| 20110180290 | ELECTRICAL POWER TOOL - An electrical power tool may include an electric motor, a speed change device, and a battery pack. The speed change device is capable of changing a reduction ratio thereof and capable of automatically switching between a high speed low torque mode in which a high speed low torque is output and a low speed high torque mode in which a low speed high torque is output, based on an external torque applied to a spindle. A distance from the axis to a center of gravity of the battery pack and a mass of the battery pack are set such that an inertia moment around the axis is greater than a reaction around the axis that is produced when the high speed low torque mode is changed to the low speed high torque mode in the speed change device. | 07-28-2011 |
| 20110180289 | IMPACT TOOL - The cover is provided with engaging pieces that engage with a recessed groove provided on the outer peripheral surface of a hammer case and hold the cover on the hammer case to prevent the cover from being detached. The cover is also provided with bumper receiving portions extending from the front end of the cover and allowing the bumper to be externally attached to the cover, and engaging claws formed on the bumper receiving portions and engaging with engaged recessed portions formed on the inner peripheral surface of the bumper for holding the bumper to prevent the bumper from being detached from the cover. The cover with the bumper attached to the bumper receiving portions is provided to the hammer case. | 07-28-2011 |
| 20110167651 | CIRCULAR SAW - A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each having a combination of a drive gear and a driven gear as one unit which are engaged with each other and transmit torque of the first rotating shaft to the second rotating shaft. A torque transmission path via the first gear train is defined as a first power transmission path and a torque transmission path via the second gear train is defined as a second power transmission path, and the transmission path is switched between the first power transmission path and the second power transmission path. | 07-14-2011 |
| 20110162862 | ELECTRIC POWER TOOL - An electric power tool includes a tool portion, a fuel cell, a power drive source, and a water-holding unit. The water-holding unit holds a reaction water produced in the fuel cell by oxidation reaction between a fuel and an oxidizing agent. | 07-07-2011 |
| 20110162630 | STRATIFIED SCAVENGING TWO-STROKE ENGINE - A two-stroke engine is provided with a piston, a cylinder that houses the piston in a manner allowing reciprocation, a crankshaft that is connected to the piston via a connecting rod, a crankcase that houses the crankshaft in a manner allowing rotation, a mixture gas passage that introduces mixture gas into the crankcase, a scavenging passage that extends between a scavenging intake that opens into the crankcase and a scavenging port that opens into the cylinder; and an air passage that is connected to an intermediate position of the scavenging passage for introducing air into the scavenging passage. The engine is adapted such that, in a part of an upward stroke period of the piston, the crankcase in which negative pressure is generated is connected to the scavenging passage via the scavenging port. Accordingly, most of air introduced into the scavenging passage form the air passage flows toward the scavenging port and into the cylinder without changing the direction of flow. | 07-07-2011 |
| 20110162219 | HANDHELD ELECTRIC POWER TOOL - A handheld electric power tool comprises a main body supporting a tool, a motor housed in the main body and configured to drive the tool, a battery interface disposed in a back portion of the main body and configured to detachably receive a battery pack, and a top grip disposed on a top portion of the main body. In a planar view of the main body, a center axis of the top grip extends in front and back direction and a center of gravity of the battery pack attached to the battery interface is located at one side of a straight line passing through the center axis of the top grip. | 07-07-2011 |
| 20110162164 | CORDED HOSE AND DUST COLLECTOR - A hose equipped with a cord, wherein the hose and the cord can be easily assembled together and easily maintained. A cord-equipped hose, wherein opposite ends of a flexible hose are respectively provided with tube holders each constructed from a pair of half tubes. The tube holders each sandwich an end of the flexible hose with the pair of half tubes joined together and each form, between the joined ends of the half tubes, a lead-out opening for an electric power source cord. Opposite ends of the electric power source cord in the flexible hose are respectively led out of the lead-out of the tube holders and held in position. | 07-07-2011 |
| 20110155405 | POWER TOOL - A hammer drill equipped with a main body part; a drive motor; a motion conversion mechanism, and a vibration absorber which are housed in the main body part; and a handgrip which is provided as a continuation of the main body part at a position closer to the rear end side of the tool than the drive motor and used for gripping the tool. The absorber is in a configuration where vibrations of the main body part are suppressed during a machining operation. | 06-30-2011 |
| 20110154670 | POWER TOOL - A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool. | 06-30-2011 |
| 20110146023 | BACKPACK POWER TOOL - A vibration proofing property is provided in a backpack power tool. A backpack power tool has a backpack carrying part | 06-23-2011 |
| 20110139479 | HOOK FOR ELECTRIC POWER TOOLS AND ELECTRIC POWER TOOL EQUIPPED WITH THE HOOK - A hook for electric power tools is disclosed. The hook is used with an electric power tool comprising a handle and a battery pack detachably mounted to a lower end portion of the handle. The hook is designed to be attached to the electric power tool in the proximity of the lower end portion of the handle and includes a ring-shaped slip-off preventing portion having an opening into which, when the battery pack is not attached to the handle, the handle can be inserted into the opening of the slip-off preventing portion, and when the battery pack is attached to the handle, the slip-off preventing portion can be prevented from being pulled out from the handle by the battery pack attached to the handle. | 06-16-2011 |
| 20110138954 | POWER TOOL - A power tool includes a power source, a speed change mechanism and a tool bit. The speed change mechanism includes first and second rotating shafts disposed parallel to each other, a first power transmission path provided with a first gear train and a first clutch and a second power transmission path provided with a second gear train and a second clutch. The power transmission path is switched between the first power transmission path and the second power transmission path while the first and second gear trains are held engaged, by shifting of the first and second clutches between the power transmission state and the power transmission interrupted state according to a load applied to the tool bit. The speed change mechanism further includes a switching retaining mechanism, a switching preventing mechanism, a switching set value adjusting mechanism or a switching mechanism. | 06-16-2011 |
| 20110131817 | BUSH CUTTER TO WHICH BATTERY PACK CAN BE ATTACHED AND DETACHED - A bush cutter comprises an operating rod, a cutting unit disposed at a front end of the operating rod, a main unit disposed at a rear end of the operating rod and a transfer shaft disposed within the operating rod. The cutting unit rotatably supports a cutting blade. The main unit houses a motor that drives the cutting blade. The main unit is provided with a battery pack interface configured to slidably receive a battery pack for supplying electric power to the motor. A direction in which the battery pack slides in the battery pack interface is angled with respect to an central axis of the operating rod. According to this configuration, a user can easily attach and detached the battery pack. | 06-09-2011 |
| 20110131816 | BUSH CUTTER WITH A VERSATILE OPERATING ROD - A bush cutter comprises an operating rod, a cutting unit, a main unit and a transfer shaft. The cutting unit is disposed at a front end of the operating rod and rotatably supports a cutting blade. The main unit is disposed at a rear end of the operating rod and houses a motor that drives the cutting blade. The transfer shaft is disposed within the operating rod and transfer output torque of the motor from the main unit to the cutting unit. An adapter is fixed to the rear end of the operating rod and the main unit is provided with a rod insertion hole configured to receive the rear end of the operating rod with the adapter fixed. This configuration may prevent the operating rod, which has versatility, from being erroneously assembled. | 06-09-2011 |
| 20110127941 | POWER TOOL - A technique for providing a user with effective information in performing an operation is provided in a power tool having a speed change mechanism. A power tool has a speed change mechanism that switches a tool bit | 06-02-2011 |
| 20110127058 | Power Tool - It is an object of the invention to provide an effective technique for a motor support structure of a power tool to reduce vibration. A representative reciprocating power tool may include a tool body, a tool bit, a grip, a motor, a tool bit side bearing, a grip side bearing, a tool bit side bearing housing, a grip and an elastic element. The tool bit side bearing housing houses the tool bit side bearing, while the grip side bearing housing houses the grip side bearing. The elastic element is disposed between the grip side bearing housing and the grip wherein the grip side bearing housing is elastically supported by the grip via the elastic element. According to the invention, because the grip is adapted to support the grip side bearing housing via the elastic element and the rigidity of the grip side bearing housing can be increased and vibration of the grip side bearing housing can be reduced. Further, the elastic element can absorb manufacturing errors caused between the tool body and the grip when the grip is mounted to the tool body. | 06-02-2011 |
| 20110114347 | HAND-HELD TOOL - An effective technique for detecting several load conditions different in presence or absence and magnitude of load applied to a tool bit is provided in a hand-held tool. A hand-held tool | 05-19-2011 |
| 20110113587 | DUST COLLECTOR - In a dust collector, a main body includes a motor and a rotary fan. The rotary fan is to be driven by the motor to suck air from outside through an intake port provided at the main body. A receptacle unit configured to allow a battery pack to be attached thereto and an exhaust port configured to allow a dust bag to be detachably attached thereto are provided at the main body. A handle capable of being grasped and a belt fastening part configured to allow a belt to be fastened thereto are also provided at the main body. At an underside of the main body, a supporting surface is provided which is configured to allow the dust collector with the dust bag and the battery pack attached to the exhaust port and to the receptacle unit respectively to be placed thereon. | 05-19-2011 |
| 20110108300 | HOOK FOR ELECTRIC POWER TOOL AND RECHARGEABLE ELECTRIC POWER TOOL EQUIPPED WITH THE HOOK - A hook for an electric power tool is engageable with a carabiner comprising a hook end portion, and a gate member capable of opening the hook end portion. The hook includes: a base portion attached to a housing of a rechargeable electric power tool; an engagement portion positioned outside the base portion and having a first through-hole; a folded-back portion connecting the base portion and the engagement portion and having a second through-hole; and an outer abutment portion formed between the first and second through-holes and configured to cause the gate member to be bent inwardly when the gate member is pressed against the outer abutment portion. The outer abutment portion is engaged with the carabiner by inserting the hook end portion into the first and second through-holes, while the gate member is pressed against the outer abutment portion to open the hook end portion. | 05-12-2011 |
| 20110101912 | BATTERY CHARGERS - A battery charger includes telephone handset and a connector for connecting with a cellular phone. A sound signal can be transmitted between the telephone handset and the cellular phone via the connector. | 05-05-2011 |
| 20110100665 | HAND-HELD POWER TOOL - A technique for reducing the costs of manufacturing an auxiliary handle provided separately from a main handle in a hand-held power tool is provided. A hand-held power tool ( | 05-05-2011 |
| 20110094847 | DRIVING TOOL - A driving tool of the invention includes a motor, a flywheel that is rotationally driven by the motor, an operating member that drives a material to be driven, an operating member actuation mechanism that selectively transmits a rotating force of the flywheel to the operating member and drives the operating member. The flywheel includes a driving-side member that is rotationally driven by the motor, a driven-side member that transmits a rotating force to the operating member, and a clutch member that connects the driving-side member and the driven-side member when the rotation speed of the motor is a predetermined speed or higher, while releasing the connection between the driving-side member and the driven-side member when the rotation speed of the motor is lower than the predetermined speed. | 04-28-2011 |
| 20110088922 | BATTERY-POWERED POWER TOOLS - It is an object of the invention to provide a technique for bringing a center of gravity of a battery-powered power tool closer to a working axis of a tool bit in the battery-powered power tool. | 04-21-2011 |
| 20110083868 | POWER TOOL - In a power tool, a housing is composed of two divisional housings to be combined together; two receptacle blocks are provided on inner surfaces of the two divisional housings, respectively, and configured to protrude opposite to each other from the inner surfaces of the two divisional housings to surround an electric component and to hold the electric component in place when the two divisional housings are combined together into the housing; and a seal layer of an elastic material is formed integrally with one or each of the two receptacle blocks. The seal layer formed on a first receptacle block is pressed against a second receptacle block or another seal layer formed on the second receptacle block to provide sealing between opposed surfaces of the two receptacle blocks when the two divisional housings are combined together. | 04-14-2011 |
| 20110083636 | ENGINE WITH AN IMPROVED ARRANGEMENT OF THE CARBURETTOR UNIT - In order to create an engine more preferably for a small working machine, for example for garden, forest and landscape work or for an engine-operated tool and the like, with a carburettor unit for mixture provision, which carburettor unit via an inlet pipe is connected with a cylinder of the engine, wherein the cylinder extends along its piston running direction from its crankcase side as far as to its head end, and wherein a holding device is provided which serves for the mechanical holding of at least the carburettor unit and at least comprises an elastic element with an improved arrangement of the carburettor unit and easy removeability of the carburettor, i.e. simple assembly and disassembly, it is proposed that the holding device with the at least one elastic element is provided between the carburettor unit and the cylinder and that the holding device is arranged above the inlet pipe in the direction towards the head end of the cylinder in such a manner that a suspended arrangement of the carburettor unit on the cylinder is formed. | 04-14-2011 |
| 20110083630 | DEVICE FOR SUPPLYING FUEL FOR AN ENGINE AND METHOD FOR MOUNTING A FUEL FEED LINE - In order to create a device for supplying fuel, with a connecting piece for connecting at least one fuel 1ine of an engine, in particular an engine of a small piece of equipment, for example for garden, forest or landscape maintenance or for example of a motorised tool or the like, wherein an intake manifold is provided which is arranged adjacently to a fuel tank, with an improved arrangement of a connecting piece of a device for supplying fuel of an engine, it is proposed that the intake manifold has a retaining device for the retentive arrangement of the connecting piece on the intake manifold. | 04-14-2011 |
| 20110079624 | COMBUSTION POWER TOOL - A technique for improving the cooling performance of a combustion chamber in a combustion power tool is provided. The combustion power tool includes first and second combustion chambers, a partition that separates the first combustion chamber from the second combustion chamber, openings, formed in the partition and communicate the first combustion chamber with the second combustion chamber, and a drive section that moves toward a front end by combustion pressure. The combustion pressure is generated when a flow of flammable gas, which is produced by combustion of the flammable gas in the first combustion chamber propagates to the second combustion chamber through the openings, and burns flammable gas in the second combustion chamber. The combustion gas flows from the first combustion chamber to the second combustion chamber in a direction around a central axis of the second combustion chamber while flowing along an inner wall of the second combustion chamber. | 04-07-2011 |
| 20110079409 | POWER TOOL - It is an object of the invention to provide an effective technique for reducing the load of user's fingers in a power tool. A representative power tool includes a body, a tool bit, a driving means and a handgrip that extends from a grip proximal end on the side of the body to a grip distal end in a direction that crosses the axial direction of the tool bit. The power tool includes a holding optimization region that is arranged on the handgrip and shaped to match with the holding form of the fingers of the user when the user holds the handgrip. Specifically, the holding optimization region at least includes the rear end surface of the grip distal end region such that a normal on the rear end surface crosses an axis of the tool bit forward of the handgrip. As a result, according to the invention, the force of the user's fingers and palm on the handgrip can be optimized. | 04-07-2011 |
| 20110078910 | ELECTRIC POWER TOOL - An electric power tool has an electric motor disposed in a main body and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member is supported by the main body, a detector is disposed in the main body to detect a movement of the movable member and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member. The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened. | 04-07-2011 |
| 20110073630 | DRIVING TOOL - Contact arms are symmetrically arranged at lateral sides of the drive passage, and contact portions of tips of the contact arms are movable between an ON position and an OFF position along an axis line, which is different from a driving axis line of an ejection exit. | 03-31-2011 |
| 20110073338 | POWER TOOL - It is an object of the invention to reduce transmission of an external force caused by run-out of a tool bit to a tool body in a power tool is provided. A representative power tool which performs a predetermined operation by linear motion of a tool bit in its axial direction has a tool body, a tool holder that holds the tool bit in its front end region and extends in the axial direction of the tool bit, and an elastic element. A rear region of the tool holder opposite from the front end region extends into the tool body, and in the extending region, the tool holder is coupled to the tool body such that the tool holder can rotate about a pivot on a z-axis defined by an axis of the tool bit, in directions of y- and x-axes which intersect with the z-axis. The elastic element applies a biasing force to the tool holder in such a manner as to hold the tool holder in a predetermined position or an initial position with respect to the tool body. | 03-31-2011 |
| 20110073335 | POWER TOOLS - A power tool includes a tool unit having an electric motor for driving a tool bit, and a first base and a second base each capable of being assembled with the tool unit. The tool unit and the first base can be assembled into a first tool. The tool unit and the second base can be assembled into a second tool that is different from the first tool. | 03-31-2011 |
| 20110067669 | LUBRICATION SYSTEM FOR FOUR-STROKE ENGINE - A lubrication system for a four cycle engine lubricates the valve mechanism with the oil mist of the concentration lowered by the liquefying means. | 03-24-2011 |
| 20110067659 | LUBRICATION SYSTEM FOR PORTABLE FOUR-STROKE ENGINE - A lubrication system for a portable four-stroke engine includes an opening end of the breather passage is disposed at substantially a center of a valve-operating chamber, and the valve-operating chamber is formed by attaching a valve-operating chamber cover. An inner cover is attached to an inner surface of the valve-operating chamber cover so as to be provided along and in contact with the inner surface of the valve-operating chamber cover. A suction passage is formed as a gap between the circumferential edge of the top plate portion and the inner cover. Three or more suction tubes that are in communication with the suction passage are provided in the inner cover, each of the suction tubes having an opening end. At least one of the opening ends of the suction tubes is provided lower than the opening end of the breather passage in an attitude of the engine during use. | 03-24-2011 |
| 20110057584 | VARIABLE SPEED SWITCH - A switch for controlling a rotational speed of a motor includes an operation member, a first circuit, and a second circuit. The first circuit includes a brush coupled to the operation member having a contact and also includes a variable resistive plate having a resistance that changes in response to a contact position of the contact point of the brush, so that the first circuit outputs a control signal to the motor according to the contact position of the contact point. The second circuit connects the brush and the resistive plate without through the contact point when the brush is positioned at a given position relative to the resistive plate. | 03-10-2011 |
| 20110056813 | SWITCH DEVICES FOR POWER TOOLS - A switch device for a power tool includes a switch case and a switch lever. The switch lever extends outwardly from within the switch case. The switch lever has a rotative portion rotatably supported by a support portion of the switch case. A waterproofing member is disposed between the rotative portion and the support portion and provides a waterproof seal therebetween. | 03-10-2011 |
| 20110056177 | ELECTRIC WHEELED APPARATUS - An electric wheeled apparatus comprises a main body, at least one wheel supported by the main body in a rotatable manner; an electric motor configured to apply torque to the at least one wheel, a battery interface configured to removably receive at least one battery pack which is originally designed as a power source of an electric power tool, and an electric circuit unit configured to electrically connect the at least one battery pack attached to the battery interface with the electric motor. | 03-10-2011 |
| 20110048360 | STARTING DEVICE FOR COMBUSTION ENGINE - In order to design a starting device for at least one combustion engine, more preferably cable-operated starting device for at least one two-stroke or four-stroke engine with at least one cable disc or cable drum rotatably mounted in a housing, which for generating a drive rotational moment for an engine shaft can be rotated by means of at least one starting handle or pulling handle, via at least one force transmission means, more preferably via a starting cable or pulling cable and which is connected via at least one elastic coupling link with at least one driver link, more preferably with at least one pawl driver, by means of which the drive rotational moment can be transmitted onto the engine shaft, the coupling link has two ends, wherein an end is engaged with the driver link, as light as possible through direct operational connection of force transmission means and elastic link/coupling link it is proposed that another end of the coupling link is engaged with the cable disc or the cable drum and the force transmission means. | 03-03-2011 |
| 20110048359 | STARTING DEVICE FOR COMBUSTION ENGINE - In order to create a starting device for at least one combustion engine, more preferably cable-operated starting device for at least one two-stroke or four-stroke engine with at least one cable disc or cable drum rotatably mounted in a housing, which for generating a drive rotational moment for an engine shaft which by means of at least one starting handle or pulling handle via at least one force transmission means more preferably via a starting cable or pulling cable can be rotated and via at least one elastic coupling link is connected with at least one driving link more preferably with at least one pawl driver by means of which the drive rotational moment can be transmitted to the engine shaft, the coupling link has two ends, wherein an end is engaged with the driver link and another end with the cable disc or the cable drum, it is proposed through direct operational connection of force transmission means and elastic link/coupling link to configure preferably easily that another end of the coupling link is engaged with the cable disc or the cable drum and the force transmission means. | 03-03-2011 |
| 20110043057 | POWER TOOL - It is an object of the invention to provide a technique for easily controlling the output characteristic of a brushless motor in a power tool by adjusting the number of turns of a coil that forms a stator winding. A power tool has a brushless motor which includes a rotor | 02-24-2011 |
| 20110041666 | CUTTING DEVICES - A cutting device includes a positioning mechanism for positioning a cutting unit at a plurality of tilt angles including a first tilt angle and a second tilt angle in a left direction and/or a right direction. The first tilt angle is larger than the second tilt angle. A setting state for the first tilt angle is reset to a setting state for the second tilt angle when a positioning state at the first tilt angle is released. | 02-24-2011 |
| 20110031825 | POWER TOOL - A power tool includes a motor housing, a motor, a motor-side terminal, a switch block, and a switch-side terminal provided on the switch block to be connected to the motor-side terminal. A hollow tubular member is provided on one of the motor housing and the switch block and extends in a longitudinal direction of the motor housing, and a fitting member is provided on the other of the motor housing and the switch block and fitted in the tubular member. The motor-side terminal and the switch-side terminal are connected to each other within a hollow of the tubular member. As long as the motor-side terminal and the switch-side terminal are at least connected to each other, the tubular member and the fitting member are held in the fitted state so that a connection between the terminals is isolated from the outside of the tubular member. | 02-10-2011 |
| 20110031098 | SWITCH DEVICES - A switch device includes a switch body and an operation member. The switch body includes a case and a rotary shaft rotatably supported by the case and extending from one end of the case in an axial direction. The operation member is joined to the rotary shaft. The case has a cylindrical outer surface and the operation member has a cylindrical inner surface disposed coaxial with the cylindrical outer surface of the case. A support member is disposed at one of the cylindrical outer surface of the case and the cylindrical inner surface of the operation member and has an edge portion extending linearly along a circumferential direction of the one of the cylindrical outer surface and the cylindrical inner surface, so that the edge portion can slidably contact the other of the cylindrical outer surface of the case and the cylindrical inner surface of the operation member. | 02-10-2011 |
| 20110030986 | POWER TOOLS - A plurality of components of a power tool are coupled to each other to form a component assembly. Positioning members are disposed within a housing body and resiliently support the component assembly from opposite sides in an axial direction. | 02-10-2011 |
| 20110030983 | POWER TOOL - It is an object of the invention to provide a power tool that effectively prevents leakage of lubricant while regulating the internal pressure of a housing space for a driving mechanism. | 02-10-2011 |
| 20110030519 | PRE-ASSEMBLABLE ARRANGEMENT - The invention relates to a pre-assemblable arrangement of elements, in particular a tool arrangement or hand tool arrangement, wherein the arrangement exhibits at least one intake manifold ( | 02-10-2011 |
| 20110025207 | ELECTRIC POWER TOOL - An electric power tool can include a main body, which rotates a motor with a pull operation of the switch lever and actuates a head tool by a rotative force of the motor, and an auxiliary tool configured for attaching and detaching to and from the electric power tool main body. In the main body, an actuating part actuated with the pull operation of the switch lever is provided. The auxiliary tool includes a detecting part, which noncontactly detects an actuation of the actuating part, and an electric circuit section for actuating electric devices, provided in the auxiliary part, by a detecting actuation of the detecting part. | 02-03-2011 |
| 20110008118 | DUST COLLECTING ATTACHMENT - A technique for allowing a user to operate an operating member disposed in a front end region of a power tool in the state in which a dust collecting attachment designed to be attached to the front end region of the power tool is left attached to the power tool. The dust collecting attachment is used on a power tool having an operating member for removal and/or bit angle setting of a tool bit coupled to a front end region of a tool body. The dust collecting attachment has a dust collecting member which can be attached to the front end region of the tool body. The dust collecting member has an opening formed in a region which faces the operating member in the state in which the dust collecting member is attached to the tool body, and the operating member can be operated by user's finger through the opening. | 01-13-2011 |
| 20110008117 | DUST COLLECTING ATTACHMENT - It is an object of the invention to provide a technique that contributes to rationalization of dust collection, in a dust collecting attachment for use on a power tool. | 01-13-2011 |
| 20110003541 | SANDER - It is an object of the invention to improve usability of a movable handle, in a sander having the movable handle. | 01-06-2011 |
| 20110000352 | JIG FOR MITRE CIRCULAR SAWING MACHINE AND MITRE CIRCULAR SAWING MACHINE - A stopper is usable without requiring time and a complicated operation. A jig for a mitre circular sawing machine includes a holder attached to a side surface of a base of a mitre circular sawing machine, and a work support configured to be connected to the holder, and in a state in which the holder is attached to the base, to be movable between a stopper plate position where the work support is placed on the base and an upper surface of the work support becomes parallel to an upper surface of the base and a retreating position where the work support retreats outside the base. | 01-06-2011 |
| 20100327685 | ATTACHMENT STRUCTURE FOR MOTOR ASSEMBLY - In attachment structure for motor assembly, accommodating portion with a bottom is formed in housing such that the motor assembly including commutator motor and brush holder unit is accommodated therein with the brush holder unit facing downward. Receiving portion for positioning the brush holder unit is formed in the accommodating portion. Abutment portion is formed on the brush holder unit for positioning between stator and the brush holder unit. The motor assembly is positioned within the accommodating portion such that the brush holder unit is in contact with the receiving portion and that the stator and the brush holder unit are brought into contact with each other through the abutment portion. Fixing member is inserted from an open side of the housing, brought into contact with the stator, and fixed to the housing, so that the motor assembly is interposed between the fixing member and the receiving portion. | 12-30-2010 |
| 20100323550 | CONNECTORS FOR ELECTRIC CORDS - An electrical connection device includes a first connector and a second connector capable of being mechanically and electrically connected to the first connector. A lock mechanism can lock the connection between the first and second connectors. The first connector has a cover capable of covering a connecting region between the first and second connectors. The second connector has an unlock device operable to unlock the lock mechanism. The unlock device is positioned not to interact with the cover when the first and second connectors are connected to each other. | 12-23-2010 |
| 20100320969 | Battery pack - A battery pack is provided with a plurality of battery modules; a pack main body that removably receives the plurality of battery modules; a movable member that prohibits the plurality of battery modules from being attached to and removed from the pack main body at a first position; at least one sensor that detects whether the movable member is located at the first position or not; and a controller that performs at least one predetermined processing based on detection by the at least one sensor. | 12-23-2010 |
| 20100319203 | COUPLING APPARATUS FOR COUPLING BLADE PROTECTOR TO TOOL BODY OF GARDENING TOOL - A coupling member can releasably couple a blade protector to a tool body of a gardening tool. The coupling member is movably and non-removably coupled to one of the tool body and the protector. | 12-23-2010 |
| 20100315804 | ELECTRIC POWER TOOLS - An electric power tool can include a switch and a lamp that is another member are incorporated in the housing, and the lamp is coupled to the case of the switch and assembled in the grip part integral with the switch, | 12-16-2010 |
| 20100314146 | ELECTRIC TOOL AND REMOTE CONTROL HOLDER FOR THE ELECTRIC TOOL - The purpose of the present invention is to maintain a better usability and a better electrical connection, while restricting burden on an attachment portion of an electric tool. In an attachment portion of a chain saw to which a battery pack is mounted, a pair of ribs are provided parallel to and on outer surfaces of the guide rails. On the contrary, a connecting member of a remote control holder has a connecting wall positioned outside the guide rails and having a pair of recessed grooves for allowing the pair of ribs to be fitted into the recessed grooves. The chain saw can be connected to the connecting member without utilizing the guide rails and by the engagement between the ribs and the connecting wall. | 12-16-2010 |
| 20100308764 | MOTOR CONTROLLER AND ELECTRIC TOOL HAVING THE SAME - A motor controller comprises a processor selectively outputting an on-signal to either one of an upper arm switching element and a lower arm switching element based upon a detected position by the position sensor, gate drivers inputting a driving voltage to the gates of the switching elements by shifting a level of the on-signal from the processor to the upper arm switching element and a bootstrap capacitor configured to be charged while the upper arm switching element is turned off and to behave as a voltage supply for the gate driver while the upper arm switching element is turned on. The processor is configured to reduce a set duty ratio when the set duty ratio is equal to or larger than a predetermined value (e.g. 80 percents) and a rotational position of the motor does not change for a first predetermined time. This motor controller can prevent the switching element from a burnout even if the motor is locked. | 12-09-2010 |
| 20100304649 | DEVICE FOR PREVENTING REMOVAL OF A FIXING MEMBER OF A WHETSTONE COVER IN A DISC GRINDER - In a configuration in which a fixing screw | 12-02-2010 |
| 20100288907 | Floor plate - The invention relates to a floor plate, in particular for portable, handheld tools with a combustion engine, an essentially flat surface with an continuous outer edge and at least one first opening with a related edge and a second opening with a related edge, wherein the at least one edge of an opening exhibits an element that projects at an inclined angle, which serves as a baffle plate to divert sparks and particles, and further that at least the continuous edge of the floor plate and/or the edge of at least one opening are at least sectionally beaded or pulled up. | 11-18-2010 |
| 20100270344 | Harness for a handheld power equipment - The harness comprises a backplate, a plurality of belts and an attachment. The backplate is arranged on the back of the user. The plurality of belts is configured so that one end of each belt is connected to the backplate and another end of each belt is connected to each other on the front of the user. The attachment is supported by at least one of the backplate and the plurality of belts, and is configured to be attached to the power equipment. The backplate preferably comprises at least one ventilation groove formed on its inner surface and extending to the edge of the backplate, which allows air to pass between the user and backplate easily. | 10-28-2010 |
| 20100252294 | HANDLE PORTION OF HAND-HELD ELECTRIC TOOL - Three battery cells can be arranged such that one battery cell is situated on the front side of a handle portion and that the remaining two battery cells are situated on the rear side thereof while being arranged laterally side by side. Also, a handle portion can be generally of a triangular cross-sectional configuration whose apex portion is situated on the front side of the handle portion and whose base portion is situated on the rear side thereof; and the handle portion is grasped by bringing fingertips into contact with the apex portion ( | 10-07-2010 |
| 20100252291 | Power tool - A power tool capable of performing vibration damping action in working operation, without an increase in size. The working tool includes a motor, a housing in which an internal mechanism driven by the motor is stored, a tool bit disposed on one end of the housing, a hand grip continuously connected to the other end of the housing, and a dynamic damper. The dynamic damper is disposed by utilizing a space between the housing and the internal mechanism so that the damping direction of the dynamic damper faces the longitudinal direction of the tool bit. | 10-07-2010 |
| 20100242699 | SLIDE TYPE CIRCULAR SAW - In a slide type circular saw, slide bars extending parallel to each other in a front-rear direction are slidably supported by bearing parts provided in first and second holding portions. The bearing part included in the first holding portion is press-fitted therein, while the bearing part included in the second holding portion is loosely inserted therein, and the second holding portion includes a pressing member which is configured to press the bearing part of the second holding portion against an inner surface of the second holding portion in a direction perpendicular to a plane which contains axes of the slide bars. | 09-30-2010 |
| 20100237126 | DRIVE TOOL - A drive tool includes an ejector, a press member, a press detection switch, an operation member, an operation detection switch, a control unit, an operation state detector, and a report unit. The control unit makes the ejector carry out ejection of a fastening tool when the press detection switch and the operation detection switch are turned on. The operation state detector detects a case where the drive tool comes into one of a plurality of kinds of preset operation states which include at least one operation state other than a state of a battery. Report patterns different for each of the plurality of kinds of operation states are set in the report unit. When one of the operation states is detected by the operation state detector, the report unit reports the detection using the report pattern set corresponding to the detected operation state. | 09-23-2010 |
| 20100236801 | IMPACT TOOL - It is an object of the invention to provide a technique that contributes to realizing both the switch selecting function and the handle vibration-proofing function, in an impact tool which can switch an operation mode of a tool bit. An impact tool includes a motor | 09-23-2010 |
| 20100236800 | POWER TOOL - It is an object of the invention to easily determine a currently-selected operation mode in a power tool which offers several operation modes. A representative electric hammer drill | 09-23-2010 |
| 20100233944 | SANDER - A clamp device for a sander includes: a clamp body slidable on a plate between a clamping position and an unclamping position at which positions a clamp strip contacts with or is away from a side surface of the plate; a support shaft provided on the plate close to the clamp body; an operating member having a first and second ends and rotatably connected to the support shaft, the first end being a connecting end connected to the clamp body, and the second end being an operating end extending above the clamp body, so that the operating member is elastically deformable in an expanding and contracting directions between the connecting end and the operating end; and an engagement member provided on the plate opposite to the support shaft and engageable with the operating end of the operating member while an intermediate portion of the operating member is being compressed. | 09-16-2010 |
| 20100224666 | DRIVING TOOL - Vibration or the impact of a tool main body may be blocked by the support of a battery holder via elastic materials in a floating state at the rear end portion side in a feed direction of a driven-members-housing magazine and by the attachment of a battery pack to this battery holder. | 09-09-2010 |
| 20100210195 | STOPPER DEVICE FOR GRINDING STONE COVER OF GRINDER - A grinder can include a stopper projection provided to a grinding stone cover and position a stopper abutting portion on a side of a gear housing in order to restrict a position adjustable range through abutment of the stopper projection to the stopper abutting portion in a position where the grinding stone cover has rotated in a rotational direction of the grinding stone by a set angle. | 08-19-2010 |
| 20100206596 | HAND-HELD POWER TOOL - Improving vibration reduction of a handle in a hand-held power tool by performing a predetermined operation on a workpiece by linear movement of a tool bit in an axial direction. The power tool includes a power tool body, a handle and a vibration-proofing part. The vibration-proofing part includes an elastic element that is disposed between the power tool body and the handle and reduces transmission of vibration from the power tool body to the handle, and also includes a body-side receiving part and a handle-side receiving part which are opposed to each other so as to hold the elastic element. The vibration-proofing part is designed such that deformation of the elastic element is shearing deformation in each of the direction of a z-axis defined along the axial direction of the tool bit and the directions of a y-axis and an x-axis which intersect with the z-axis. | 08-19-2010 |
| 20100194315 | POWER TOOLS - One aspect according to the present invention includes a power tool including a control device that can output a brake operation signal to a DC motor to apply a short-circuit brake thereto in response to turning off an operation switch. The brake operation signal is stopped depending on the rotational speed of the motor when the operation switch is turned off during the rotation of the DC motor. | 08-05-2010 |
| 20100192314 | HANDY CLEANERS - One aspect according to the present invention includes a handy cleaner including a cleaner body and a battery pack. The battery pack serves as a power source and includes a lithium-ion battery. The battery pack can be mounted to and removed from a cleaner body without need of operating a cover or the like mounted to the cleaner body. | 08-05-2010 |
| 20100176176 | COMBUSTION TYPE DRIVING TOOLS - A fan switch and an ignition switch are arranged such that the moving directions of operating buttons thereof cross the moving directions of a contact lever and the moving direction of a switch lever, respectively. | 07-15-2010 |
| 20100175972 | Switch devices for power tools - One aspect according to the present invention includes a switch device for a power tool. The switch device includes a switch lever operable to move between an ON position for activating the power tool and an OFF position for stopping activation of the power tool. An on-lock mechanism can lock the switch lever in the ON position. An off-lock mechanism can lock the switch lever in the OFF position. The operation for making the on-lock mechanism effective and the operation for releasing the off-lock mechanism are performed by operating an operation member in different directions from each other or by operating two separate operation members. | 07-15-2010 |
| 20100175903 | Electric hammer - An electric hammer comprising a hammer bit performing hammering work on a work, a drive motor, a hammering piece driven by the drive motor to apply a hammering force to the hammer bit, and a mechanism for damping vibration generated during hammering. The damping performance of the electric hammer is enhanced by causing the driving amount applied to the damping mechanism to vary between a first mode where the damping mechanism generates vibration of the hammer bit subjected to an external force from the work during the load driving time and thereby optimizes the damping and a second mode where the damping mechanism generates vibration corresponding to the vibration of the hammer bit not subjected to an external force from the work during the no-land driving time and optimizes damping. | 07-15-2010 |
| 20100163266 | Electric power tools - One aspect according to the present invention includes an electric power tool, in which a capacitor is positioned closer to a motor control circuit than a switch electrically connected to the motor control circuit. | 07-01-2010 |
