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| Number | Title | Issue Date |
| 8104546 | Hand-held power tool with torque limiter The invention relates to a hand tool machine with a torque limiter (2) enabling a user to set a maximum torque which is transmitted by a motor drive (4) to a tool carrier (6). According to the invention, the hand tool machine comprises an overlo... | 01/31/2012 |
| 8083006 | Hand-held power tool A hand-held power tool, in particular an electrical hand-held power tool (1), includes a drive motor (4), a tool shaft (14), and a first overload clutch (19) for limiting the maximum torque that acts on the tool shaft (14). Prefera... | 12/27/2011 |
| 8066082 | Air driver device An air driver device having a simple construction, being of a compact size, and having excellent durability. The air driver device is designed to shut off a supply of compressed air to an air motor, by means of a tightening torque control mechanism and a shut-off va... | 11/29/2011 |
| 7987922 | Automatic gear shifting power tool While a load torque applied to a tool shaft is lower than a predetermined value, a moving member is maintained at a first position, and a sun gear is rotated integrally with an internal gear. When the load torque applied to the tool shaft reaches or exceeds the pred... | 08/02/2011 |
| 7861797 | Hand-held machine tool with slip clutch An at least partially rotating and axially percussive hand-held machine tool (4) has an impact mechanism (5) with a guide tube (6) in which a percussion piston (7) is driven in an axially percussive manner by a pneumatic spring (8)... | 01/04/2011 |
| 7828074 | Hammer drill A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating movement; a striker reciprocatingly driven by the motion conversion membe... | 11/09/2010 |
| 7694750 | Hammer drill A hammer drill includes a motor; a spindle rotatingly driven by the motor and holding an output bit; a motion conversion member for converting rotational movement of the motor to reciprocating movement; a striker reciprocatingly driven by the motion conversion membe... | 04/13/2010 |
| 7658239 | Power tool, drive assembly, and method of operating the same A power tool including a drive assembly including a first clutch assembly having an engaged configuration, in which the first clutch assembly transfers a drive force from a motor shaft to a spindle, and a disengaged configuration, in which the first clutch assembly ... | 02/09/2010 |
| 7658238 | Impact drill An impact drill for boring a workpiece includes a main frame, a motor housed in the main frame, a spindle movably supported by the main frame and rotatable by the motor and movable in its axial direction, a first ratchet positioned fixedly with respect to the spindl... | 02/09/2010 |
| 7644783 | Power tool gear-train and torque overload clutch therefor A power tool transmission is described in which an overload clutch mechanism is arranged to provide a relatively compact power tool. A torque adjustment dial is arranged between the visible portions of the motor housing and the gearbox, and the dial is coupled to a ... | 01/12/2010 |
| 7506694 | Rotary tool A hand held motor driven electrically powered tool, in particular a rotary hammer, comprising a spindle (40) for rotatingly driving a tool or bit (68), a spindle rotary drive train (14, 5, 10) for rotatingly driving the spindle (40) and a... | 03/24/2009 |
| 7469753 | Power tool, drive assembly, and method of operating the same A power tool including a drive assembly including a first clutch assembly having an engaged configuration, in which the first clutch assembly transfers a drive force from a motor shaft to a spindle, and a disengaged configuration, in which the first clutch assembly ... | 12/30/2008 |
| 7455123 | Hand-held power tool with a torque-limiting unit A hand-held power tool has a motor output shaft, a tool driver, and a torque-limiting unit with which a maximum torque transferred from the motor output shaft to the tool driver is adjustable by an operator, the torque-limiting unit including a spring system, the sp... | 11/25/2008 |
| 7441480 | Disposable battery powered screw driver, locking mechanism, and accessories In accordance with one embodiment of the present invention, a driver may include an electric motor coupled to a bit interface. The bit interface may include a generally cylindrical body having first and second hollow portions. The first hollow portion may be on one ... | 10/28/2008 |
| 7422075 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 09/09/2008 |
| 7413029 | Screw fastening machine The present invention aims to provide a screw fastening machine for reliably switching and changing a driving force transmitting path with the seating on a work as a reference. According to the screw fastening machine in which a first pulley is connected to a... | 08/19/2008 |
| 7410441 | Multispeed power tool transmission A portable power tool having a relatively compact multi-stage, three-speed transmission and a related method for operating a power tool with a multi-stage, three-speed transmission. ... | 08/12/2008 |
| 7410007 | Impact rotary tool with drill mode An impact rotary tool is provided that is switchable between an impact mode where the tool delivers an impacting torque on an output tool and a drill mode where the driver delivers a smooth output on an output tool. The impact rotary tool includes an impact mechanis... | 08/12/2008 |
| 7404781 | Multispeed power tool transmission A method for operating a portable power tool having a multi-stage, three-speed transmission. ... | 07/29/2008 |
| 7395874 | Slaving and blocking device A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving unit fixable on the driving part fixed against relative rotation and having slaving claws... | 07/08/2008 |
| 7380613 | Electric power tool An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are provided a clutch switching groove which engages with a connecting project... | 06/03/2008 |
| 7360607 | Hand-held power tool with a torque-limiting unit A hand-held power tool has a motor output shaft, a tool driver, a torque-limiting unit with which a maximum torque transferred from the motor output shaft to the tool driver is adjustable by an operator; an actuating element that adjusts the torque-limiting unit, an... | 04/22/2008 |
| 7359628 | Control device for an electric motor The invention relates to a drive device for an electric motor, in particular for a brushless DC motor in an electrical tool, which is powered by a rechargeable battery. The drive device has at least one power semiconductor, in particular for controllable application... | 04/15/2008 |
| 7354372 | Actuator for shift-by-wire automatic transmission system An electric actuator for an automatic transmission includes an adapter to transmit rotary motion between the adapter and the automatic transmission. An electric motor has an output shaft operably connected to the adapter by a gear set which includes a ring gear. The... | 04/08/2008 |
| 7334715 | Electric fastener driver A stationary annular abutting member 14E is provided with a first projecting section that operates as part of a ratchet mechanism. A rotational flange section is provided with a second projecting section that operates as part of the ratchet mechanism. The fir... | 02/26/2008 |
| 7334509 | Torque limiting driver and assembly A method for assembling a torque-limiting driver, and the resulting drive. The method comprises the steps of providing a handle having a housing, drive assembly, and a testing assembly. The drive assembly is assembled, inserted into the testing assembly and calibrat... | 02/26/2008 |
| 7334648 | Rotary impact power tool A impact power tool includes a motor rotating a drive shaft, an output shaft holding a tool bit, and a hammer coupled to the drive shaft. The hammer is rotatable together with the drive shaft and is engageable with an anvil fixed to the output shaft so as to give a ... | 02/26/2008 |
| 7334647 | Rotary tool An overload clutch assembly for a power tool having two torque settings through which rotary drive is transmitted to a spindle. The overload clutch assembly is capable of being between switched between the two torque settings by at least one actuator. The clutch ass... | 02/26/2008 |
| 7320422 | Fastener tool The fastener tool includes a nosepiece, a nosepiece cover pivotally attached to the nosepiece, a latch pivotally attached to the nosepiece cover, a latch wire pivotally attached to the latch for engaging at least one hook disposed on the nosepiece, wherein the latch... | 01/22/2008 |
| 7318691 | Tool apparatus for milling machine The present invention provides an automated-torque controlled tool for attachment to a milling machine. The tool comprises an elongated hollow housing defined by a neck section, a middle section, and a bottom section. The neck section is adapted to engage a spindle ... | 01/15/2008 |
| 7314097 | Hammer drill with a mode changeover mechanism A hammer drill/driver with a motor having an output member, a planetary transmission, a clutch assembly and a clutch bypass. The planetary transmission, which includes a ring gear, receives rotary power from the output member and produces a rotary output. The clutch... | 01/01/2008 |
| 7308948 | Electric power tool An electric power tool is provided which prevents malfunction with excellent operability even when one operation mode among various modes is selectable. In a gear case of a housing, there are provided a clutch switching groove which engages with a connecting project... | 12/18/2007 |
| 7303364 | Switch assembly An apparatus for providing convenient control of a power tool electrical system. A switch assembly includes a first actuator and a second actuator, which is disposed remotely from the switch and first actuator. The second actuator is connected via a coupling device,... | 12/04/2007 |
| 7287602 | Spindle lock for rotary power tool A slaving and blocking device for transmitting a torque from a driving part to a driven part and for stopping the driven part at a torque engaging the driven part has a slaving element fixable on the driving part and having slaving claws offset from one another in a... | 10/30/2007 |
| 7281459 | Torque regulating assembly A torque regulating assembly includes a first tubular shell having at least one groove disposed along the longitudinal axis of the first tubular shell and a second tubular shell having at least one aperture, wherein the first tubular shell is screwed into the second... | 10/16/2007 |
| 7276878 | Amperage control for protection of battery over current in power tools Amperage control of a power tool motor is provided by pulse width modulation of current from a power supply. The pulse width modulation may be varied according to the determined motor current and measured power supply voltage. The power supply may include a battery ... | 10/02/2007 |
| 7252155 | Percussive power tool with flushing head A power tool (1) having a striking means (5), by which a percussive tool (2) that can be driven at least partially along an axis (A) struck directly and having a flushing bore (4) extending at least partially longitudinally through a tool... | 08/07/2007 |
| 7243734 | Power tool with battery power supply The present invention relates to a power tool with battery power supply comprising a main body and a detachable battery package which are connected with each other via a securing frame and a locking assembly. The securing frame includes a guiding device, an locking/... | 07/17/2007 |
| 7235940 | Torque limiting device for an electric motor A rotary speed limiting device for an electric motor has a current detecting device for detecting a motor current of the electric motor, a nominal value setting for adjusting a torque, a control and/or regulating device which limits the motor current to a maximum va... | 06/26/2007 |
| 7234536 | Power screwdriver A power screwdriver is disclosed having a drive which is coupled via a clutch, disengaging as a function of torque, to a tool drive shaft for driving a tool. The screwdriver comprises an electronic control unit for controlling the drive, and a sensor which is couple... | 06/26/2007 |
