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| Number | Title | Issue Date |
| 7210207 | Clevis removal and installation tool and method of use A clevis removal and installation tool comprising a socket with a centrally disposed engagement member within the socket, the engagement member perpendicularly anchored to a midline of the interior of the socket, the socket with an opening for removably fitting over... | 05/01/2007 |
| 7194939 | Pneumatic wrench having reinforced strength A pneumatic wrench includes a pneumatic motor, a striking mechanism, and a drive shaft. The striking mechanism includes a support seat, a cam, a cover, and a hammer. Thus, the pivot shaft of the hammer has two opposite sides each formed with a reinforcing rib to rei... | 03/27/2007 |
| 7140282 | Pneumatic wrench having reinforced strength A pneumatic wrench includes a pneumatic motor, a striking mechanism, and a drive shaft. The striking mechanism includes a cylindrical support seat, a cam, a cover, and a hammer. The hammer has a protruding engaging portion and a reinforcing rib juxtaposed to the eng... | 11/28/2006 |
| 7089833 | Air actuated pneumatic impact wrench lug bolt tool The invention relates to a device utilizing compressed air for loosening and tightening fasteners that are located in hard to access areas. The device enables a single operator to stabilize the device while applying pressure via a pneumatic hammer to loosen or tight... | 08/15/2006 |
| 7024973 | Oxygen sensor removal and installation tool An oxygen sensor removal and installation tool comprises a driving wrench which includes a socket drive with a socket sized to fit onto an oxygen sensor of a vehicle. The driving wrench is made from a thin plate of steel with an attached socket drive projecting at a... | 04/11/2006 |
| 6935207 | Jar lid opener An automatic jar lid opener comprises a cylindrical housing and a truncated conical lid retainer rotatably attached to the cylindrical housing. A rotary hammer assembly is installed in the housing to convert a torque output from a motor assembly in the housing, into... | 08/30/2005 |
| 6860180 | Screwdriver provided with percussion mechanism to facilitate the unfastening and the fastening of screw A screwdriver comprises a handle and a shank. The handle is provided at a head end with a percussion block. The shank is put through the interior of the handle such that one end of the shank is fastened with the percussion block, and that other end of the shank is e... | 03/01/2005 |
| 6769334 | Driving wrench A wrench set includes a drive handle with an impact end and a drive end. The drive end engages a drive wrench having a slot which receives the drive end of the drive handle. The opposite end of the drive wrench includes a laterally projecting or transversely project... | 08/03/2004 |
| 6748833 | Impact wrench An impact wrench (1) having a handle (3), an arm (7) pivotally connected to the handle (3) and of unitary construction with the handle (3), and a key (11) on the arm (7) for coupling with a keyseat of a wrench tool, s... | 06/15/2004 |
| 6415690 | Spanner A spanner has a handle, a head frame connected to the handle, a drive head device, a pair of reinforced plates, and a pair of arm plates. The head frame has a pair of parallel panels, and a spacing formed between the parallel panels. Each parallel panel h... | 07/09/2002 |
| 6250187 | Screwdriver with an impact device A screwdriver includes a handle in which a chamber and a recess are respectively defined in two ends of the handle. An annular flange with a passage extends radially inward from an inside of the handle. A block and a spring are received in the chamber, an... | 06/26/2001 |
| 6149356 | Portable pneumatic tool assembled with module units A portable pneumatic tool includes a housing composed of two symmetric half shells or several partially cut-away shells; an air inlet module unit, a valve actuating module unit and an operating (or functioning) module unit fluidically communicated with on... | 11/21/2000 |
| 6085621 | Ratchet wrench A ratchet wrench for turning bolts and nuts disposed in narrow or inaccessible places. The ratchet wrench is rotatably attached to an end of an operation rod. The ratchet wrench comprises a weight attached to the operation rod, the weight being slidable l... | 07/11/2000 |
| 6006634 | Socket wrench with impact drive A socket wrench has a body with a handle, and a head with a hollow cavity. A ratchet mechanism is received in the cavity and has a drive shank for connection with a socket. The ratchet mechanism is pivotally connected to the head in order to allow the hea... | 12/28/1999 |
| 5787770 | Rotational actuator A rotational actuator includes an actuator case, a first rotor supported on the actuator case for rotation about an axis of rotation, a second rotor supported on the actuator case coaxially with the first rotor and for rotation independent of the first ro... | 08/04/1998 |
| 5692420 | Socket wrench with impact drive A socket wrench has a body with a handle, and a head with a hollow cavity. A ratchet mechanism is received in the cavity and has a drive shank for connection with a socket. The ratchet mechanism is pivotally connected to the head in order to allow the hea... | 12/02/1997 |
| 5161440 | Wrench for transmitting variable magnitude vibrational forces to bolt A wrench for producing unbalanced vibrational forces which are transmitted to a bolt turned by the wrench. The wrench produces counteracting torque forces which act on the sides of the wrench handle to facilitate the production of unbalanced vibrational f... | 11/10/1992 |
| 4920836 | Two blade type impulse wrench This invention relates to an impulse wrench which has two blades but generates only one impact pulse on the main shaft per one rotation of a liner. In this invention, a liner has at least four seals and a main shaft has at least two seals. And the shape o... | 05/01/1990 |
| 4838133 | Hydraulic pulse wrench An improved hydraulic pulse wrench provided with a hydraulic pulse generator has a liner, an anvil rotatably mounted in the liner and having a longitudinal slit, and two blades loosely mounted in the longitudinal slit. The liner has an elliptic hole. The ... | 06/13/1989 |
| 4819523 | Lug nut wrench A lug nut wrench has a half inch driver for receiving a lug nut socket. The driver is connected to one end of a five inch length of half-inch pipe. The other end of the pipe is welded to a one by two by three-eighths inch plate at a position near one end ... | 04/11/1989 |
| 4785693 | Hydraulic torque wrench A communication passageway is formed to extend from the end surface of a cover member opposed to the axial end surface of the shoulder portion of a main shaft and through the main shaft so that in only one of the two particular phase conditions obtained p... | 11/22/1988 |
| 4766784 | Pneumatic tool with a replaceable tool bit turning screws and nuts A pneumatic tool for turning screws and nuts has a tool body including a driving member mounted rotatably thereon and capable of being pneumatically rotated. A ratchet wrench unit includes a crank and a swing arm. The crank has a crankshaft journaled in t... | 08/30/1988 |
| 4585078 | Rotary impact tool Disclosed is a rotary impact tool comprising a case enclosing a drive motor, a hammer member with an inner working surface provided with projections, an intermediate member transmitting rotation from the motor to the hammer member and including a guide ma... | 04/29/1986 |
| 4474091 | Tap wrench A wrench is held in a steel case body that provides added leverage to the wrench shank. The body has a clock spring that is wound, to be released for moving a hammer into contact with the wrench shank to loosen stubborn nuts or the like. A ratchet and paw... | 10/02/1984 |
| 3990407 | Explosively powered rotary tool An explosively powered tool or wrench is described that is operable under water and provides high torque, approaching that of an impact wrench, through the detonation of small charges to generate pressure for driving pistons of an expansible chamber motor... | 11/09/1976 |
