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| Number | Title | Issue Date |
| 8113296 | Anti-rotation device for an impact tool An anti-rotation device resists relative rotation between a shank and a tool head within which the shank is supported in an impact tool, for example a rivet gun. The anti-rotation device includes a first anchor portion arranged to grip the shank between the mounting... | 02/14/2012 |
| 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 |
| 7438139 | Tool retention apparatus and method A tool assembly (10), for example a hydraulic or pneumatic hammer assembly, includes a housing (11) defining a chamber (16), a removable reciprocating work tool (20) arranged in the chamber, and a tool retention member (80) having ... | 10/21/2008 |
| 7413028 | Ramming device to be assigned to a rock breaker The ramming device comprises a ramming element to be assigned to the end of a rock breaker. The inventive device receives the shocks generated by the rock breaker and transmits them to fragments to be compacted. The ramming device also has a frame comprising: positi... | 08/19/2008 |
| 7392727 | Tool device for driving various tool members A tool device includes a tool shank having a noncircular engaging hole for slidably receiving a socket member which includes a noncircular bore for engaging with various fasteners, a biasing device may bias the socket member outwardly relative to the engaging hole o... | 07/01/2008 |
| 7380612 | 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 |
| 7360606 | Hand machine tool with a removeable tool holder A hand power tool has a striking element via which a tool (10) in a tool holder (12) can be driven in striking fashion, which the tool holder can be detachably secured—via its body (14)—to a drive part (16) via at least one locking el... | 04/22/2008 |
| 7357194 | Percussion power tool A percussion power tool includes a motor (6) located in the tool-housing (4) for driving the output member (12) and the percussion mechanism (10), a chuck (20) for receiving a working tool (22), a locking mechanism (24 | 04/15/2008 |
| 7325625 | Floor covering removal and impact tool An impact tool particularly useful for floor removal material includes an elongated removable rod having an upper end and a lower end. A handle is connected to the upper end of the rod, and an anvil is fixed to the lower end of the rod. A collar is mounted above the... | 02/05/2008 |
| 7309195 | Shank for a rotary and/or percussive tool A shank for a rotary and percussive tool has a locking groove (3) arranged between two guided regions (1a, 1b) and axially closed at its opposite ends for receiving at least one radially displaceable and axially displaceable, withi... | 12/18/2007 |
| 7303027 | Grounding rod driving system A grounding rod driving system for facilitating installation and extraction of a grounding rod includes a sleeve slidably receiving a grounding rod. The sleeve slides along the grounding rod when the grounding rod is being driven into a support surface. A driver is ... | 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 |
| 7284622 | Tool holder for hammer A tool holder for a hammer comprises a tool holder body having a forward end for non-rotabably receiving a shank of a tool. The tool holder body defines an axially extending slot. A locking body through the slot for releasably engaging an axially extending closed gr... | 10/23/2007 |
| 7258351 | Quick-action chuck A quick-action chuck, in particular for a power tool, has an actuating element (20) and a control device which includes at least one mechanism (12, 22, 36, 42, 50) for controlling at least one locking device (10) that serves to absorb a chucking... | 08/21/2007 |
| 7258349 | Hand power tool A hand power tool selected from the group consisting of a drill hammer and an impact hammer has an exchangeable tool holder, a guide pipe which receives the tool holder at its free end, a locking device arranged on the guide pipe and operative manually for fixing th... | 08/21/2007 |
| 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 |
| 7243923 | Centering drill chuck A drill includes a chuck which has a body member including a bore to receive a tool. Jaw members frictionally engage the tool to retain the tool in the chuck. A member is associated with the jaw members and the body to move the jaw members between clamping and non-c... | 07/17/2007 |
| 7237990 | Surgical tool system with quick release coupling assembly A surgical tool system with a handpiece and a cutting accessory that has inner and outer hubs. The handpiece has a spring biased lock ring that abuts a complementary stop member integral with the accessory outer hub to hold the accessory to the handpiece. An RFID ch... | 07/03/2007 |
| 7222862 | Tool holder A tool holder for a power tool, in particular a drilling and/or hammering tool comprising a manually actuable sleeve (40) wherein components of the tool holder are held within the sleeve by a snap ring (100) which snap ring is fitted within the sleeve.... | 05/29/2007 |
| 7185721 | Male portion, drill bit and threaded joint for percussive rock drilling A male portion for percussive rock drilling includes sections of reduced cross-sectional area. At least one thread for percussive rock drilling is provided at an end of the male portion. The end of the male portion comprises an abutment surface for the transfer of i... | 03/06/2007 |
| 7156005 | Multiple bit hand tool with automatic bit locking The hand tool has a chuck with a central axial opening through which bits or other tool elements are selectively moved from a retracted position to an extended operative position. A mechanical element automatically engages the tool element, such that as the tool ele... | 01/02/2007 |
| 7152692 | Hydraulic hammer having a sealing bushing A hydraulic hammer having a sealing bushing includes a percussion piston that delivers strokes to a tool. A lower part of the percussion piston is sealed with respect to a frame by the sealing bushing, which includes one or more lower seals. The sealing bushing does... | 12/26/2006 |
| 7143840 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 12/05/2006 |
| 7137457 | Hand-held machine tool A hand power tool, in particular a drill hammer or jackhammer, is disclosed, which has a guide tube (11), a tool holder (24) that can be attached interchangeably to the guide tube (11), and a locking device (23) that locks the tool holder... | 11/21/2006 |
| 7134508 | Rotary to reciprocating motion conversion attachment for a power rotary hand tool A preferred embodiment of a rotary tool reciprocating motion conversion attachment for a rotary power hand tool is described which is configured to be attached to a nose portion of the hand tool housing. The attachment has a rotary drive train in a housing that is c... | 11/14/2006 |
| 7121774 | Clamping device for hexagon bits A clamping device has a hexagon receptacle for receiving hexagon bits inserted in an axial direction of the hexagon receptacle. A radially movable locking element is provided for engaging a locking recess of an inserted hexagon bit. The locking element has a rest po... | 10/17/2006 |
| 7111690 | Manual slide post driver and extractor for “T”-type metal or fiberglass or plastic posts A post driving device is disclosed. The post driving device slides to a desired position and is essentially locked in place through frictional force. As the post is driven into the ground, the device can be adjusted to a new position along the length of the post. | 09/26/2006 |
| 7097405 | Method and apparatus for fastening steel framing with staggered teeth nails A piercing nail with a spring member that deforms as the nail penetrates through framing members engages with a bottom surface to framing members together. ... | 08/29/2006 |
| 7096972 | Hammer drill attachment Power tools of the type under consideration include hammer drills, for example, which are electric or battery powered and includes two modes of operation: a rotation mode and a rotation-hammer mode. A manually operable selector lever enables the hammer drill to be s... | 08/29/2006 |
| 7093670 | Impact drill An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the s... | 08/22/2006 |
| 7083003 | Power tool with detachable drive end A rotary tool includes a housing structure with a plurality of apertures therein, drive mechanism disposed within the housing structure, a detachable drive end mechanism coupled to the drive mechanism, and a retaining structure received by the apertures. The drive m... | 08/01/2006 |
| 7062858 | Hand tool and knife for deburring A hand tool for deburring is provided, as well as a cutting blade to be inserted into the tool, the tool comprising a housing, and a rotatable holding device, the holding device being positioned in and being rotatable in the housing and having a chamber for releasab... | 06/20/2006 |
| 7059424 | Apparatus for rotating a threaded closure device An apparatus for rotating a threaded tightening device includes a guide and an anvil utilized to impact a lug on the threaded tightening device to rotate the tightening device onto or off of a threaded member. The guide has a frame with a support sleeve attached the... | 06/13/2006 |
| 7059425 | Reciprocating power tool It is an object of the present invention to provide a reciprocating power tool having a further improved power transmission mechanism for converting a rotating output of a driving motor into linear motion in the axial direction of the tool bit. According to the pres... | 06/13/2006 |
| 7052022 | Chuck for pneumatic hammer A chuck for a pneumatic hammer including an insert and a pin engaged with the insert and one or more other components of the chuck, such as, for example, the nosepiece. The pin is configured to prevent or otherwise limit rotation of the insert relative to the one or... | 05/30/2006 |
| 7048073 | Fastener installation systems A fastener installation tool to install fasteners, such as rivets, risers, standoffs, and other types of fasteners operates upon vacuum and air pressure. Fasteners are installed with minimal reactive forces to the operator's hand, thus reducing the risk of repetitiv... | 05/23/2006 |
| 7040421 | Liquid driven downhole drilling machine In a liquid downhole drilling machine, the guiding bushing (31) for the drill bit is rotatably journaled in the housing (11, 12) and, via a one-way coupling (29), coupled to a turning sleeve (22) that has axial ridges (24) that bou... | 05/09/2006 |
| 7036404 | Tool including bit and handle A handle is provided for use with a bit or extensive rod. The handle includes a socket. The socket includes a thin section, a thick section, an annular face between the thin and thick sections, an axial cavity and a radial aperture communicated with the axial cavity... | 05/02/2006 |
| 7021157 | System and method for testing a clamping force A system for testing a clamping force includes a lever, a base, and a sensor, The lever is coupled to a pivot and moves about the pivot. The lever includes a first end and a second end on opposites sides of the pivot. The base receives a first tip of a clamp and mai... | 04/04/2006 |
| 7013987 | Clutch assembly and clamp mechanism for rotary tool disc As system for clamping an rotary tool accessory disc or blade to an output shaft of a rotary tool comprising a cam clamping mechanism and a clutch assembly wherein the cam clamping mechanism comprises: a head element threadably engageable with the output shaft at a ... | 03/21/2006 |
