Abstract: A work tool switches smoothly between operational modes and has a lever member that is easily joined. The work tool includes an operation member, a lever member, and a switching member. The lever member is swingable about a support shaft in response to an operation on the operation member and is swingable with the support shaft placed through the lever member. The lever member has an elongated hole through which the support shaft is placed. The elongated hole extends along the lever member. The switching member is linked with a swing of the lever member to move linearly.

Abstract: A lug not engaging tool in the form of a rod includes a first end for receiving a standard socket, and a second end for engaging a socket wrench or impact wrench. An intermediate portion has a hexagonal section for engaging an open end wrench or a closed end box wrench. The rod includes sections having differing diameters. In use, a jack or jack stand may be placed under a section having an appropriate diameter to ensure that the jack or jack stand supports the lug nut engaging tool in a position that is substantially perpendicular to the wheel as the tool is used to loosen or tighten a lug nut.

Abstract: An impact tool includes a housing, an electric motor supported within the housing and having a motor shaft, and a drive assembly configured to convert a continuous rotational input from the motor shaft to consecutive rotational impacts upon a workpiece. The drive assembly includes a camshaft having front and rear portions. A gear assembly is coupled between the motor shaft and the drive assembly, the gear assembly including a ring gear that is rotationally and radially fixed relative to the housing and a plurality of planet gears meshed with the ring gear. Each of the plurality of planet gears is coupled to the rear portion of the camshaft, and a line of action of a radial load exerted by the rear portion of the camshaft on the housing passes through one of the plurality of planet gears and the ring gear.

Abstract: An impact tool (1) includes: a motor (10); an impact mechanism (115), which is rotatable about an output rotational axis (BX) and is operably driven by the motor; an anvil (16) having an anvil shaft (113) disposed forward of the impact mechanism, and a radially-outward-protruding anvil projection (114) that is impacted in a rotational direction by the impact mechanism; a hammer case (6) housing the impact mechanism; an anvil bearing (115) held by the hammer case and surrounding the anvil shaft; a first groove (121) formed on an outer-circumferential surface of the anvil shaft so as to encircle the output rotational axis; a second groove (122) formed on an inner-circumferential surface of the anvil bearing so as to encircle the output rotational axis; and a restraining member (123) having a first portion (124) disposed in the first groove, and a second portion (125) disposed in the second groove.

Abstract: This disclosure relates to a switch guard that prevents inadvertent pressing by a user of the direction-control switch of a handheld power tool. On each side of the housing of the tool, a pair of protrusions extend from the housing, one just to the front of the switch and one just to the rear. Whether the power tool is being operated right- or left-handed, the protrusions prevent a user's thumb or forefinger from inadvertently pressing the direction-control switch while the tool is in operation.

Abstract: The drill includes a motor, a spindle rotatable with a rotational force transmitted from the motor, a clutch assembly that disables transmission of the rotational force to the spindle in response to a rotational load on the spindle reaching a release value and including an elastic member that adjusts the release value, and a change ring switchable from a clutch mode in which the clutch assembly is operable to a nonclutch mode in which the clutch assembly is inoperable in response to the change ring operated in a forward rotation direction. In the clutch mode, the elastic member elastically deforms to reduce the release value in response to the change ring operated in the forward rotation direction, and to increase the release value in response to the change ring operated in a backward rotation direction.

Abstract: A hammer drill comprises a drive mechanism including a spindle, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, and a hammer lockout mechanism adjustable between a first mode and a second mode. The hammer drill further comprises a clutch adjustable between a first state and a second state. The hammer drill further comprises a collar rotatably coupled to the housing and movable between a first rotational position in which the hammer lockout mechanism is in the first mode and the clutch is in the first state, a second rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the first state, and a third rotational position in which the hammer lockout mechanism is in the second mode and the clutch is in the second state.

Abstract: A power tool allows mode switching and clutch operation torque switching using a single ring. An electric vibration driver drill includes an internal gear that meshes with planetary gears, an internal gear lock pin that moves forward relative to the internal gear to lock the internal gear, a first vibration cam fixed to a spindle, a second vibration cam that rubs against the first vibration cam and rotate relative to a gear housing, a vibration switch lever that moves forward relative to the second vibration cam to lock the second vibration cam in a nonrotatable manner, and an annular change ring that switches between forward movement and rearward movement of the internal gear lock pins and switches between forward movement and rearward movement of the vibration switch lever.

Abstract: A hand-held power tool has a lower mass and an upper mass. The lower mass has a tool and a working device for causing the tool to effect a work movement. The upper mass is movable relative to the lower mass and has a drive motor for the working device. A first vibration decoupling device is arranged between the lower mass and the upper mass for decoupling the upper mass from the lower mass in terms of vibration. A guide drawbar guides is provided for guiding the work tool by an operator. An electrical energy storage provides electrical energy for starting the drive motor. A drawbar carrier is carried by the upper mass and is connected to the upper mass via a second vibration decoupling device. The guide drawbar is attached to the drawbar carrier, and the energy storage is carried by the drawbar carrier.

Abstract: A pneumatic tool contains: a body, a drive unit, a piston element, at least one buffer, and a movable air tube. The body includes an intake head, a limiting sleeve, a switch, an air conduit, and a connection portion. The connection portion has a first guide element, a first guiding orifice, and the limiting sleeve has a shoulder. The drive unit includes a moving tube, a first segment, and a second segment. The moving tube has a protrusion, the second segment has a second guide element and a second guiding orifice. The moving tube has a coupling orifice and a cavity, and an air valve is defined between the cavity and the second guide element. One buffer is defined between the first guide element and the second guide element and includes a first through hole. The movable air tube includes an air inlet segment and an air outlet segment.

Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, and an anvil received within the spindle for reciprocation in response to reciprocation of the piston. The anvil imparts axial impacts to a tool bit in response to reciprocation of the piston. The rotary hammer also includes a bit retention assembly for securing the tool bit to the spindle.

Abstract: A percussion mechanism device, in particular for an impact wrench, includes a drivable drive shaft that has at least one guide groove, an output shaft, and a percussion unit that includes an anvil coupled with the output shaft in a rotationally fixed manner, a hammer, and at least one ball. The hammer is supported via the at least one ball along the at least one guide groove on the drive shaft and includes an at least regionally concavely curved ball guidance area that has an axial clearance from the at least one ball at a radially innermost point that is greater than a radial clearance between the at least one ball and a radially innermost point of a concave ball guidance area of the at least one guide groove.

Abstract: A motor-driven surgical instrument that may comprise (i) a movable drive member that is driven in a first direction when the electric motor operates in a first direction and that is driven in a second direction when the electric motor operates in a second direction. Movement of the drive member causes movement of the movable component of the end effector, and (ii) a motor control circuit connected to the motor for controlling the motor. The motor control circuit may comprise a switching circuit that, upon actuation, reverses the direction of the motor from the first direction to the second direction. The switching circuit may be actuatable separately through each of: (i) actuation of a movable actuator of the switching circuit through movement of the drive member at least in the first direction; and (ii) manual actuation by a user of the surgical instrument.

Abstract: A power tool includes an output shaft for outputting torque, a transmission mechanism for driving the output shaft, a motor for driving the transmission mechanism, and a housing for containing the motor. The transmission mechanism includes a ring gear being capable of rotating relative to the housing, locking pins for limiting the rotation of the ring gear, a locking ring for limiting the locking pins to rotate with the ring gear, and biasing elements for biasing the locking pins so as to move toward the locking ring. The ring gear is formed with apertures going through the ring gear in an axial direction of the output shaft and the locking pins pass through the ring gear through the apertures and contact with the locking ring. The locking ring is formed with locking protuberances for contacting and engaging with the locking pins.

Abstract: An impact tool has a body and a striking mechanism that drives a tool accessory in a prescribed longitudinal direction. The body has a first body element on which the striking mechanism is provided, and a second body element. The first body element and the second body element are connected via a cushioning mechanism. A vibration reducing mechanism is provided on the first body element.

Abstract: An electric hand tool that includes an electric motor, an electrical position indicator for operation by a user, and a control unit for controlling power delivery from a power supply to an electric motor, based signals received from the electrical position indicator. The electrical position sensor may be coupled to a trigger operable by a user, and the electrical position sensor may be configured to detect the relative position of the trigger and to only operate in the middle of its possible range. The control unit may determine if the signals received from the electrical position indicator are out of a defined range. If the signals received from the electrical position indicator are out of a defined range, the control unit may register a fault, such as a fully open and/or fully short fault.

Abstract: A planetary gear system with a sun gear, a ring gear co-axial with the sun gear, at least one planetary gear meshing with both the sun gear and the ring gear, and a planetary gear carrier which rotationally supports the at least one planetary gear. A torque clutch is supported by and connected directly between two of the sun gear, the ring gear, the at least one planetary gear and the planetary gear carrier. The torque clutch prevents relative rotation when an acting torque is below a predetermined torque value and allows relative rotation when the acting torque is above the predetermined torque value. A torque threshold adjustment mechanism is provided for adjusting the predetermined value of the torque at which the torque clutch slips.

Abstract: A power tool which has an anvil 20 that is rotated by a hammer 22 and is housed in a housing, and rotates an output shaft 18 is provided. The anvil 20 and the output shaft 18 are integrally formed into one unit, and a carrier 33 that is rotatable relative to the anvil 20 by a predetermined angle on the same axis is provided. On one portion of an outer circumferential surface of the anvil 20, a relief surface 20a is formed. Cut-out portions 33b are formed at positions opposed to each other of a carrier 33, and by allowing an engaging pin 37 to be interposed therein, a locking mechanism that limits the relative rotation between the anvil 20 and a lock ring 38 is prepared. When the tool main body is manually rotated while the hammer 22 is being stopped, the engaging pin 37 limits the relative rotation between the anvil 20 and the lock ring 38. The locked state between the anvil 20 and the lock ring 38 is released immediately when the rotation of the motor 4 is started.

Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The anvil imparts axial impacts to the tool bit in response to reciprocation of the striker. The rotary hammer also includes a synchronizing assembly operable in a first configuration in which the motor is drivably coupled to the piston for reciprocating the piston, and a second configuration in which the piston is decoupled from the motor. The rotary hammer further includes an actuator operable for switching the synchronizing assembly from the second configuration to the first configuration in response to depressing the tool bit against a workpiece.

Abstract: The hand-held power tool has a tool socket, a motor and a pneumatic striking mechanism. The striking mechanism has an exciter driven by the motor along a working axis, a striker coupled to the exciter via an air cushion, and an intermediate striker arranged between the striker and the tool socket in the striking direction. The striking mechanism also has a guide in which the intermediate striker is guided. The guide has a first sliding surface that guides a first section of the intermediate striker, and a second sliding surface that is arranged offset relative to the first sliding surface in the striking direction and that guides a second section of the intermediate striker. A radial dimension of the first section of the intermediate striker is greater than a radial dimension of the second section of the intermediate striker.

Abstract: An impact tool (1) includes a motor (3); a hammer (42) having a rotational axis extending in a first direction, the hammer (42) being rotatable in a rotational direction including a forward direction and a reverse direction opposite to the forward direction by the motor (3) and being movable in the first direction and a second direction opposite to the first direction; an anvil (52) disposed at the first direction side of the hammer (42) and strikable by the hammer (42) in the forward direction, the hammer (42) that has been struck the anvil (52) being moved in the second direction to come free from the anvil (52); and a fixing member (45A, 46A) that selectively allows the hammer (42) to move in the second direction or prevents the hammer (42) from moving in the second direction.

Abstract: A clutch for a power tool includes an adjustment ring configured to move axially relative to the housing while being rotated relative to the housing. A spring retainer is disposed axially rearward of the adjustment ring. The spring retainer is coupled for rotation together with the adjustment ring and configured to remain substantially axially stationary relative to the housing when rotated. A spring is disposed between the adjustment ring and the spring retainer. A clutch face is coupled to a portion of the transmission. A locking member is disposed between the spring retainer and the clutch face. The locking member is configured to transfer a holding force exerted by the spring to the clutch face. Rotation and axial movement of the adjustment ring alters the holding force exerted by the spring. When an amount of output torque exceeds the holding force, torque transmission to the output spindle is effectively interrupted.

Abstract: A tool with a transmission assembly having a reduction gearset and a speed selector. The speed selector has a member, an actuator and a shifter assembly. The member is movable between a first position, in which the member is non-rotatable, and a second position in which the member is coupled to a planet carrier of the reduction gearset for common rotation. The actuator includes a pivoting yoke and a follower that is coupled to the yoke. The follower engages the member so as to be axially movable with the follower. The shifter assembly has a selector switch, a switch fork, and a pair of springs. The selector switch is slidable between a first switch position and a second switch position. The shift fork is slidably coupled to the selector switch and receives the yoke. The springs cooperate to bias the shift fork relative to the selector switch into a neutral position.

Abstract: A power drill has a housing holding a planetary gear transmission and a motor. A drive stem rotatable in the housing about the axis is rotationally coupled to the planet carrier, and a chuck body is rotatable on the housing. A driver axially bearing on the jaws is axially shiftable to position jaws in the chuck, and a sleeve threaded to the driver is rotatable to position the jaws in the chuck body. The drive stem can be coupled either to the chuck body for rotating a tool held by the jaws in a screw or drill mode or to the sleeve in a tighten/loosen mode for tool exchange. A first spring bears axially inward against a front face of the transmission ring gear with an adjustable axially inwardly directed force, and a second spring bears axially against a rear face of the ring gear.

Abstract: Disclosed is a striking tool technology that contributes to reducing clutch sizes. The striking tool causes a tool bit to perform a striking operation in the long axis direction and to perform a rotational operation about the long axis, thereby causing the tool bit to carry out a predetermined machining operation. The striking tool comprises a tool body; a motor which is housed in the tool body and drives the tool bit; and a clutch which, on a route where the torque of the motor is transmitted to the tool bit, is disposed in a high rotational speed and low torque region that is a stage prior to where the rotational speed of the motor is reduced, which transmits the torque of the motor to the tool bit in a normal state, and which cuts off the transmission of torque generated about the tool bit long axis in the tool body if the torque exceeds a predetermined torque level.

Abstract: An improved power tool is provided which can alert a user of any halfway selection of a driving mode of a tool bit. A representative power tool is provided which is capable of switching among driving modes different in driving state of a tool bit. The power tool has a mode switching member that switches among the driving modes, a detecting part that detects a drive prohibited state in which any of the driving modes of the tool bit is not selected, and indicating parts that indicate a result detected by the detecting part.

Abstract: A power tool includes a motor having a can and a shaft extending axially from the can, a gear case having an inner surface that defines an opening, a bearing positioned around a portion of the shaft that extends from the can and at least partially within the opening in the gear case, and a motor mount coupled to the motor. The motor mount includes a flange extending away from the motor. The flange of the motor mount and the inner surface of the gear case axially and laterally locate the motor and the gear case on the bearing.

Abstract: An impact driver with a vibration mechanism includes a vibration switching ring externally fitted to a second cam in the forward position in such a manner that an inner protrusion on the inner circumference is latched a protrusion on the outer circumference of the second cam so that the rotation of the second cam is restricted. Further, a coil spring is provided for biasing the vibration switching ring to the forward position. A link plate provided between the mode switching ring and the vibration switching ring latches onto the front surface of the vibration switching ring and engages an engaging protrusion at the rear end with a mode switching ring. The link plate moves forward or backward to a first position where the vibration switching ring moves to the forward position or a second position where the vibration switching ring moves to the backward position.

Abstract: In a tool attachment, for fastening to an handheld machine tool equipped with a tool holding fixture, having an output shaft and a base body, which forms an inner cavity and on whose outer circumference an axially displaceable locking sleeve is situated, for releasing at least one associated locking element against a spring force of a spring element, which has a clamping ring, in the inner cavity, a anti-rotation locking unit is configured for the rotationally locked fastening of the base body to a fastening unit associated with the handheld machine tool, the anti-rotation locking unit and the fastening unit having complementary geometric forms, which are configured to engage with each other for the detachable rotationally locked fastening of the base body on the fastening unit; and the at least one associated locking element being situated in the vicinity of the anti-rotation locking unit.

Abstract: A hand-held tool device includes a planetary transmission and a striking mechanism. The striking mechanism has at least one striking mechanism shut-off clutch and a striking mechanism switching spring which opens the striking mechanism shut-off clutch in at least one operating state. The planetary transmission has at least one planetary transmission stage which at least partially encloses the striking mechanism switching spring in at least one plane.

Abstract: A hand-held tool device includes: a tool spindle; a striking mechanism; and a planetary transmission having at least one first planetary transmission stage which drives the striking mechanism, a second planetary transmission stage which drives the tool spindle, and a striking mechanism shut-off clutch.

Abstract: In a sleeve element for the axially fixing at least one bearing of a rotatable shaft, in particular a shaft of an exhaust gas turbocharger, which sleeve element has at least one through-opening in its circumferential surface, the at least one through-opening has a substantially conical shape in the radial direction of the sleeve element at least in a section thereof, and also in a turbocharger for an internal combustion engine, which comprises a speed detection device and a sleeve element for axially fixing at least one bearing of a shaft of the turbocharger, wherein the sleeve element has at least one opening through which the speed detection device extends and which has a substantially conical shape in the radial direction of the sleeve element at least in a section thereof.

Abstract: A power tool is disclosed. The power tool includes a striker, a guide tube in which the striker is guided along an axis, and a pneumatic chamber, which is closed by the striker, the guide tube and a valve device actuated by its own medium. A volume of the pneumatic chamber changes in the case of a movement of the striker along the axis. The valve device has a swivelable sealing element between the striker and the guide tube. The swivelable sealing element is swiveled into a retracted position when the striker moves in the impact direction and is swiveled into an extended position when the striker moves against the impact direction. In the retracted position, the sealing element has a first inflow surface. In the extended position, the sealing element has a second inflow surface. The second inflow surface is larger than the first inflow surface.

Abstract: A drive train for supplying power to a power tool may include, a motor, a motor shaft, a rotational coupling mechanism connected to the motor shaft, and a drive shaft connected to the rotational coupling mechanism that forms the shape of a “U.” A pair of enmeshed bevel gears transfers the motion from the motor shaft to an orthogonal tool bit. The drive train may also include a hammering device that transfers a rotational impacting motion to the tool bit. A hand power tool for driving a screw may include a tool shell with an integrally formed vertical handle, a rotational recess formed into the tool shell opposite the handle, and a tool chuck within the rotational recess that drives a screw. The tool may incorporate the drive train as described above. The tool may include a mechanism for locking the tool chuck in a particular position.

Abstract: A hand-held power tool device is described which includes an output unit, a striker, and a rotary percussion receiver which is designed for establishing a transfer of rotary percussions between the striker and the output unit, at least during a rotary percussion operation. It is provided that the hand-held power tool device includes a rotary percussion switch-off device which is designed for interrupting the transfer of rotary percussions from the striker to the rotary percussion receiver, at least during a hammer percussion operation.

Abstract: When the mode change knob of a multi-mode hammer drill is moved to the hammer only position, an electronic sensor sends a signal to a control logic circuit. When the user then depresses the trigger mechanically closing the ON/OFF switch, the control logic circuit applies a voltage either to a holding relay or to the gate of a triac which enables the relay or triac to conduct, thus providing a parallel circuit by-passing the ON/OFF switch. Consequently, when the user releases the trigger and opens the ON/OFF switch, the parallel relay or triac maintains current flow to the motor. It can be seen that in hammer only mode the user can activate the hammer drill by simply tapping the trigger to depress it and does not need to hold down trigger during use of the hammer in operation.

Abstract: A hand-held power tool, particularly a hammer drill, includes a work spindle, a hand-held power tool housing and an intermediate shaft, which is arranged in parallel to the work spindle and mounted in an axially displaceable manner for changing the operational mode, and a tooth sleeve, which is provided to transfer a torque to the intermediate shaft. The tooth sleeve is fixed in the axial direction by means of the hand-held power tool housing.

Abstract: A power tool having an impact mechanism part using a hammer 24 and an anvil 31 is provided with a switching mechanism 35 of a mode in which the hammer 24 impacts the anvil 31 while the hammer is placed over the anvil 31 and another impact mode in which the hammer 24 impacts the anvil 31 without being placed over the anvil 31. The switching mechanism 35 includes a stopper 41 and a pusher 45 disposed in the rear of the hammer 24, and the stopper 41 is moved to carry out switching by rotating the pusher 45. The change member 48 that rotates the pusher 45 has a change lever 48b, which is positioned in the outer side of the hammer case 32, and the change member 48 and an annular part 46 are engaged in a housing.

Abstract: A handheld tool device includes a hammer mechanism that has at least a striker and a cam guide that drives the striker at least in a hammer-drilling mode. The striker has at least a portion of the cam guide.

Abstract: An electric tool in which a pulsating input voltage is configured to be supplied to a drive circuit of a motor, the electric tool including: a rotation speed detection unit configured to detect a rotation speed of the motor, characterized in that the electric tool further includes: a control part configured to vary a determining value for determining whether the rotation speed of the motor satisfies a predetermined condition or not, so as to be synchronous with a pulsation cycle of the input voltage supplied to the drive circuit.

Abstract: In a clutch mechanism of a percussion driver drill, a plurality of engageable members held in a gear case is configured to be engageable with an end face of a final-stage internal gear, and a coil spring is configured to press the engageable members against the end face of the internal gear. The coil spring is disposed frontwardly of the engageable members between a switch member and an operating member of a vibration mechanism. A coupling member connected with the switch member and the operating member is disposed to pass through a gap between the plurality of engageable members and detour around a rear end of the coil spring.

Abstract: A hammer drill comprises a motor including an output shaft, a shaft assembly rotationally engaged therewith, a hollow spindle, and a hammer mechanism comprising a piston arranged for reciprocating motion within the spindle. The shaft assembly comprises a first part carrying a first gear engaged with a gear on the spindle to cause spindle rotation, a second part carrying a crank member to cause piston reciprocation, and a connecting part configured to rotationally interconnect, or disconnect, the first and second parts. In a first position of the connecting part only one of the first and second parts is rotationally engaged with the output shaft to enable rotation of only one of the first gear and the crank member respectively, while in a second position both the first and second parts are rotationally engaged with the output shaft to enable rotation of both the first gear and the crank member.

Abstract: An angle impact tool includes a handle assembly extending along a first axis, a prime mover in the handle, an output shaft rotatable about the first axis, and a work attachment connected to the handle assembly. An output drive is supported in the work attachment for rotation about an output axis perpendicular to the first axis. A gear assembly including a spur gear is positioned within the work attachment to transfer torque from the prime mover about the first axis to the output drive about the output axis. An impact mechanism is positioned within the work attachment and includes a hammer and an anvil. The hammer rotates under the influence of the prime mover and is operable to periodically deliver an impact load to the anvil. The output drive rotates about the output axis under the influence of the impact load being transmitted to the output drive by the anvil.

Abstract: An impact tool includes a motor, a hammer, an anvil, and a control unit. The hammer is configured to be driven by the motor and be movable in an axial direction of the motor. The anvil is configured to be struck by the hammer. The control unit is configured to control a rotation of the motor. The impact tool further includes a restricting unit configured to restrict the movement of the hammer in the axial direction. The control unit is configured to select a driving mode of the motor between a first mode and a second mode. The control unit selects the first mode when a load of the motor is less than or equal to a prescribed value regardless of a restriction of the restricting unit, whereas the control unit selects the second mode when the load exceeds the prescribe value and the restricting unit restricts the movement of the hammer.

Abstract: The invention relates to a hand-held power tool with a drive shaft embodied in the form of a spindle shaft, which is connected to a tool-clamping device. The drive shaft, which is coupled to a drive motor, cooperates with a torque clutch. The torque clutch is provided with a clutch-adjusting ring that is coupled to a transmission element that cooperates with at least one clutch-adjusting device in order to adjust a torque. The transmission element is situated in an axially and/or radially movable fashion on the outer circumference of a housing component. According to the invention, in at least one position of the clutch-adjusting ring, the transmission element protrudes axially beyond the housing component in the direction toward the tool-clamping device.

Abstract: A power tool includes a tool housing, an output spindle, a motor received in the tool housing, a transmission coupled to the motor and configured to transmit torque from the motor to the output spindle, a clutch assembly, and a hammer assembly. The clutch assembly includes a clutch mechanism configured to interrupt torque transmission from the transmission to the output spindle when an output torque exceeds a threshold, and a clutch housing composed of a non-metallic material and supporting at least a portion of the clutch mechanism. The hammer assembly includes a hammer mechanism configured to apply axial impacts to the output spindle when the hammer mechanism is engaged, and a hammer housing composed of a heat conductive material and supporting at least a portion of the hammer mechanism.

Abstract: A hand power tool includes a drive spindle, a mechanical impact mechanism, and a spindle lock device. The mechanical impact mechanism has an impact body having at least two drive cams. The spindle lock device has a spindle roller carrier disposed on the drive spindle. At least two spindle rollers are disposed on the spindle roller carrier. The spindle lock device is connected via a coupling member to the mechanical impact mechanism. The coupling member is disposed between the impact body and the spindle roller carrier, in the axial direction of the drive spindle. The coupling member is configured to effect rotary driving of the spindle roller carrier, upon rotary driving by the impact body, when the hand power tool is in a normal mode.

Abstract: An impact tool includes a housing, a motor having an output shaft defining a first axis, a drive shaft rotatably supported by the housing about a second axis oriented substantially normal to the first axis, and an impact mechanism coupled between the motor and the drive shaft and operable to impart a striking rotational force to the drive shaft. The impact mechanism includes an anvil rotatably supported by the housing and coupled to the drive shaft, and a hammer coupled to the motor to receive torque from the motor and impart the striking rotational force to the anvil. The impact tool also includes a locking mechanism operable to selectively lock the drive shaft relative to the housing.

Abstract: A power tool and method for recording and playing back a motor parameter. The power tool includes housing, a motor, a trigger, a mode selector switch, and a controller. The trigger outputs an activation signal based on a user input. The mode selector switch is configured to receive a user mode selection indicating a recording mode, a normal operating mode, or a playback mode. The controller receives a mode selection signal from the mode selector switch indicating the selected mode. The controller enters the recording mode when the user mode selection indicates the recording mode, and records a motor parameter while the power tool is in the recording mode to generate a recorded motor parameter. In the playback mode, the controller operates the motor based on the recorded motor parameter upon receiving the activation signal from the trigger.

Abstract: A power tool having a housing, an electric motor disposed in the housing, and a spindle drivingly attached to the electric motor. The spindle includes a cavity adapted for receiving a bit therein and a window extending through the spindle in communication with the cavity. The power tool further has a retention device including a bit engaging member disposed within the housing and operable to extend through the window and retain a bit within the cavity. The power tool still further has an actuator operable by a user externally of the housing to disengage the bit engaging member from a bit received in the cavity and, finally, a mechanical interconnection system operably coupled between the actuator and the retention device to actuate the retention device in response to the actuator, wherein the mechanical interconnection is disposed within the housing.