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| Number | Title | Issue Date |
| 8167054 | 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... | 05/01/2012 |
| 8146676 | Multifunctional power tool The invention related to a multi-functional power tool, comprises an housing, a motor set in the housing, a main shaft driven through the rotation of the motor, a working shaft extended outside the housing, an active impact block, which can rotate with and make axia... | 04/03/2012 |
| 8122971 | 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... | 02/28/2012 |
| 8109343 | Multi-mode drill with mode collar A drill includes a housing and a motor coupled to an output member by a transmission. The transmission can selectively couple the output member to an output spindle through a low speed output gear or a high speed output gear for rotating the output spindle at a firs... | 02/07/2012 |
| 8104544 | Hand machine tool The invention relates to a hand machine tool, in particular, a hammer drill or chisel, having a gearbox housing and a gearbox unit with a switching device. The switching device includes a switching spring and an operating unit which may be mounted in the gearbox hou... | 01/31/2012 |
| 8087474 | Hammer drill A hammer drill having a clutch pin and a clutch mechanism is provided. By switching the clutch mechanism, a selection can be made between a hammer drill mode and a hammer mode. The clutch pin is configured to be slidable to a sliding position where the clutch pin ru... | 01/03/2012 |
| 8028760 | Hammer drill The invention is to provide a hammer drill which is to be capable of restricting rotation of a bit in a hammer mode, and improve usability. A hammer drill includes a lock plate 51 in a housing 2, and the lock plate 51 engages with a secon... | 10/04/2011 |
| 7987920 | Multi-mode drill with mode collar A drill includes a housing and a motor coupled to an output member by a transmission. The transmission can selectively couple the output member to an output spindle through a low speed output gear or a high speed output gear for rotating the output spindle at a firs... | 08/02/2011 |
| 7942211 | Power tool This invention relates to a power tool one having a driven member 5 for releasably gripping a working element 4. The power tool is operable in a working mode in which the working element performs work, or an adjustment mode in which the driven member | 05/17/2011 |
| 7931095 | Hammer drill In a hammer drill, a coil spring is disposed rearward of a piston cylinder inside a housing so as to press the piston cylinder to an advanced position when the hammer drill operates in a drill mode, and a supporting plate is disposed at a rear end of the piston cyli... | 04/26/2011 |
| 7896097 | Electric power tool An electric power tool includes a planetary gear reduction mechanism, a switch mechanism, an impact mechanism, a hammer mechanism, a torque fixing mechanism, and a torque adjusting mechanism. The switch mechanism includes a driving member, a first driven member, and... | 03/01/2011 |
| 7891438 | Hand power tool A hand power tool, in particular a drill hammer and/or chisel hammer, has a housing, a first joining unit, and a switch device that has an actuating unit with a second joining unit corresponding to the first joining unit, the actuating unit being capable of being in... | 02/22/2011 |
| 7857074 | Hand-held power tool with a percussion unit The invention is based on a power hand tool, in particular a hammer drill and/or hammer chisel, with a percussion unit (10), which comprises a tumble bearing unit (12) with a tumble body (14) and also a piston (16). It is proposed that th... | 12/28/2010 |
| 7854274 | Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing A multi-mode drill can include a transmission to transfer torque from an output member of a motor to an output spindle. A transmission housing encloses the transmission in an interior cavity formed by a gear case shell and a cover plate. The cover plate can be coupl... | 12/21/2010 |
| 7845426 | Actuation apparatus for power tool 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 ap... | 12/07/2010 |
| 7841424 | Power output mechanism for power tools A power output mechanism for power tools includes a main part for driving an output shaft, a switch unit, an impact unit, a pressing unit, and an operation member. The switch unit has a rotation collar for controlling positions of positioning springs. The impact uni... | 11/30/2010 |
| 7828072 | Impact tool An impact tool for simultaneously providing a rotational force and an impact force to an object has an output shaft rotated by a motor, hammer for intermittently providing an impact force to the output shaft, hammer holder for movably holding the hammer, and an impa... | 11/09/2010 |
| 7806199 | Spindle lock for a hand-held combination drill and chisel hammer A spindle lock of a hand-held combination drill and chisel hammer has a gearbox housing and a countershaft rotatably supported in the gearbox housing about an axis of rotation. A locking plate is provided for selectively releasing and locking a rotational movement o... | 10/05/2010 |
| 7798245 | Multi-mode drill with an electronic switching arrangement A drill includes a housing with a motor coupled to an output spindle via a transmission. A mode collar can be rotatably mounted on the housing for movement that corresponds to different modes of operation. The mode collar can be coupled to an electronic switch to op... | 09/21/2010 |
| 7775294 | Percussion toggle device of a percussion driller This invention discloses a percussion toggle device of a percussion driller. It includes bottom ratchet wheel that joggles the top ratchet wheel fixed in the output main shaft of the percussion driller, the locking ring used to lock the rotating direction of bottom ... | 08/17/2010 |
| 7717192 | Multi-mode drill with mode collar A drill includes a housing and a motor coupled to an output member by a transmission. The transmission can selectively couple the output member to an output spindle through a low speed output gear or a high speed output gear for rotating the output spindle at a firs... | 05/18/2010 |
| 7717191 | Multi-mode hammer drill with shift lock A shift bracket can be mounted on a shift rod for movement between a first, high-speed drilling mode and a second, low-speed drilling mode. Cooperating shift lock surfaces can be associated with the shift bracket and the shift rod, respectively. For example, a groov... | 05/18/2010 |
| 7708084 | Portable power drill with gearbox A portable power drill or hammer drill having a housing (12) which consists in particular of half shells (13, 14) and accommodates a manual gearbox (26), wherein a shift element (59) that can be rotated by hand converts its rotary movemen... | 05/04/2010 |
| 7677326 | Ram for powered hammer A driving mechanism for a powered hammer having a motor and a tool holder includes a ram mounted for reciprocation in a guide tube section. The ram has a radially outwardly projecting sealing portion and an outer circumferential surface that defines a helically shap... | 03/16/2010 |
| 7654339 | Impact drill with swivel device An impact drill that includes a drive motor located in a motor housing, an impact mechanism, and a tool fitting. The tool fitting and the impact mechanism are components of a swivel device that is located such that the swivel device may swivel relative to the motor ... | 02/02/2010 |
| 7654338 | Powered hammer having beat piece with lubricant seal A powered hammer includes a housing, a tool holder coupled to the housing and configured to hold a tool, a motor within the housing, a piston slideably mounted within the housing, a drive mechanism that converts rotary output of the motor into a reciprocating motion... | 02/02/2010 |
| 7647985 | Hammer drill It is an object of the invention to provide an improvement in ease of operation of a driving mode switching mechanism in a hammer drill. According to the invention, a representative hammer drill includes a driving mode switching mechanism which has an operating part... | 01/19/2010 |
| 7591324 | Clutch device for an electric machine tool and an electric machine tool A clutch device for an electric machine tool that is drivable in a fashion selected from the group consisting of a rotary fashion, a percussion fashion, and both with an impact mechanism deliberately disengageable from or engageable with a spindle that drives a plug... | 09/22/2009 |
| 7588094 | Power hand tool A power hand tool includes a housing; an electric motor mounted in the housing for provide a rotary motion; a transmission gear set is mounted in the housing and connected with the electric motor; a torsion control device having a first rotary knob, which can adjust... | 09/15/2009 |
| 7549484 | Power tool A power tool includes a mode switching device that includes a mode switching member turned by manual operation, a linearly moving driven-side member and a mode switching mechanism actuated by linear motion of the driven-side member. The actuating member is disposed ... | 06/23/2009 |
| 7506693 | Hammer A hammer includes a housing; a motor mounted within the housing; and a tool holder rotatably mounted on the house for holding a cutting tool. A striker is mounted in a freely slideable manner within the housing, for repetitively striking an end of a cutting tool whe... | 03/24/2009 |
| 7497272 | Hand-held power tool A hand-held power tool, in particular a rotary hammer, is indicated that includes a machine housing (10) with a tool fitting (12) integrated therein, the tool fitting (12) being rotatably drivable in a first mode and being non-rotatably fixable ... | 03/03/2009 |
| RE40643 | Rotary hammer A rotary hammer includes a spindle 18 which can be rotatably driven by an intermediate shaft 24 by way of a drive device. A tool holder 16 is arranged for rotation with the spindle 18, and for releasably holding a bit or tool for selectiv... | 02/24/2009 |
| 7469752 | Power tool It is an object of the invention to provide a power tool having a rational structure. A representative power tool is provided to have a tool bit a power tool body, a motion converting mechanism housing chamber, a motion converting mechanism and a clutch mechanism. T... | 12/30/2008 |
| 7445054 | Ram for powered hammer A driving mechanism for a powered hammer having a motor and a tool holder includes a ram mounted for reciprocation in a guide tube section. The ram has a radially outwardly projecting sealing portion and an outer circumferential surface that defines a helically shap... | 11/04/2008 |
| 7438138 | Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string comprising a first end (5) for connection to a drill string and a second end provided with ridges (7) and interposed grooves (8) for trans... | 10/21/2008 |
| 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 |
| 7398834 | Hammer drill with selective lock-on A hammer drill comprising: a motor; a drive transmission capable of operating in at in at least a rotary mode and a reciprocating mode; a mode change mechanism; a switch which, when closed, provides power to the motor; and a mechanical lock-on mechanism which, when ... | 07/15/2008 |
| 7398835 | Rotary hammer having both a reciprocating hammer mechanism and a ratcheting hammer mechanism A rotary hammer incorporating both a reciprocating drive for generating a first hammering action transmittable to a tool bit and ratcheting mechanism for generating a second hammering action transmittable to the tool bit. The first hammering action and the second ha... | 07/15/2008 |
| 7395872 | Switching device The present invention is directed to a switching device with a rotatably mounted operating element (10) and an eccentric element (12) for translating a rotational displacement (14) of the operating element (10) into a translatory displace... | 07/08/2008 |
