Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8087326 | Low profile wrench and method A member may be rotated by engaging the member with a drive element and rotating the drive element in a single direction such that rotation in an opposite direction is prevented. ... | 01/03/2012 |
| 7905162 | Low profile wrench A wrench for rotating a member comprises an elongate body having a head portion. The wrench may include a drive mechanism mounted to the head portion. The drive mechanism may comprise a drive gear and a clutch gear. The drive gear may include a drive element for eng... | 03/15/2011 |
| 7347436 | Wheel suspension system, and vehicle including same A suspension system for a wheel has an elongate post member, a wheel mount adapted for mounting the wheel, an axle for rotatably mounting the wheel mount on the elongate post member, a frame adapted to slidably receive the post member such that the post member slide... | 03/25/2008 |
| 7331257 | Returning assembly of spanner A returning assembly of a spanner includes a driving portion having a receiving space for receiving a driving head, a switch unit and an ejecting unit having a truncated conic shape; a radial direction of the driving head having a slightly inclined buckling surface;... | 02/19/2008 |
| 7263918 | Ratchet structure for a wrench A ratchet structure of a wrench includes a handle, a socket, a first detent, a first elastic element, a second detent, a second elastic element, a lid and a knob. The outer periphery of the socket is formed with gear teeth. The socket is accommodated in the handle. ... | 09/04/2007 |
| 7261019 | Returning assembly of spanner A returning assembly of a spanner includes a driving portion having a receiving space, a switch unit and an ejecting unit having a truncated conic shape; a radial direction of the driving head having a slightly inclined buckling surface; the buckling surface and an ... | 08/28/2007 |
| 7244882 | Drum key Apparatus and methods for rotating objects in accordance with the invention are disclosed. One embodiment of the invention includes a shaft including a socket opening in at least one end of the shaft and a handle connected to the shaft by a unidirectional bearing. A... | 07/17/2007 |
| 7234372 | Reversible ratcheting tool with a smaller head and improved driving torque A ratcheting tool includes a handle and a head with a compartment. A drive member includes a first end extended beyond the compartment, a second end extended beyond the compartment, and a gear wheel formed between the first end and the second end. The gear wheel is ... | 06/26/2007 |
| 7213492 | Control mechanism for a socket wrench An effective control mechanism for a socket wrench that is capable of safe, high efficiency, high strength torque control while eliminating the problem of losing control due to improperly applied external force. The control mechanism includes a handle, a socket, an ... | 05/08/2007 |
| 7207393 | Stepped drive shaft for a power tool A shaft comprises an input portion and a tang. The tang has a first section, a second section, and a radial bore. The second section is disposed between the first section and the input portion along an axis. A radial cross section of the first section is less than a... | 04/24/2007 |
| 7181998 | Wrench A wrench includes a wrench body having a ring portion and a handle portion. A retainer that holds a plurality of wedge members is disposed inside the ring portion. Wedge guide grooves are formed on the inner circumferential surface of the ring portion. Each of the w... | 02/27/2007 |
| 7174810 | Selective one-way tool A selective one-way tool includes a handle, a transmission positioned in the slot, a bit-engaging element installed on the handle and a mode-switching ring rotationally installed on the handle. The handle includes a mandrel defining a slot. The transmission includes... | 02/13/2007 |
| 7165479 | Selective one-way wrench There is disclosed a selective one-way wrench with a device for retaining a socket. The selective one-way wrench includes a handle and a head formed at an end of the handle. The retaining device includes a cover installed on the head. Two parallel grooves are define... | 01/23/2007 |
| 7150208 | Universal stepless wrench The present invention relates to a universal stepless wrench. More particularly, it relates to a wrench with a stepless rotatable for receiving and turning a slideable shaft in a desired direction. The rotatable allows a tool handle to rotate freely around the slide... | 12/19/2006 |
| 7100238 | Bendable extension arm A bendable extension arm. A stiffening wire having a first end and a second end is connected at its first end to a wire receptor and at its second end to another wire receptor. A sheath covers the stiffening wire and prevents over bending of the stiffening wire. In ... | 09/05/2006 |
| 7077032 | Ratchet tool having increased driving torque A ratchet tool includes a handle having a number of inner teeth, a cartridge rotatably received in the handle and having a driving shank and having three side surfaces. Three pawls are rotatably attached to the side surfaces of the cartridge and each includes two en... | 07/18/2006 |
| 7073414 | Apparatus for accessing telecommunications networks An apparatus is disclosed for accessing a Network Interface Device of a telecommunications network. The apparatus has a main body and a wrench. The main body has a first end, a second end, and an interior cavity. The interior cavity is open at the first end and exte... | 07/11/2006 |
| 7069819 | Air motor socket wrench with quick socket release and muffler An air motor socket wrench has an air motor secured to a housing of a socket drive assembly having a socket drive member provided with a socket lock ball movable between a socket lock position and a socket unlock position. A hexagon body has inwardly inclined ramp s... | 07/04/2006 |
| 7070375 | Clamping fastener grip length indicator A temporary fastener includes a grip length indicator. By machining a flattened area into a body of the temporary fastener, by engraving an scale into the flattened area, and by attaching an indicator dot visible in the groove to a moving part of an internal assembl... | 07/04/2006 |
| 7066055 | Ratchet wrench that can release socket rapidly A ratchet wrench includes a wrench body, a ratchet wheel, a direction control mechanism, a drive member, a ball, and a quick release mechanism. The quick release mechanism includes a bolt, a movable rod, a press knob, and an elastic member. Thus, the socket is mount... | 06/27/2006 |
| 7051624 | Security nut, bolt and screw A security screw fastener, e.g. a nut or bolt having a head (3) around which is a curved exterior surface (5) which is at least partially conical or dome-shaped on which several left-handed and right-handed grooves (12, 13) are formed which are ... | 05/30/2006 |
| 7036400 | Wrench A wrench includes a wrench body having a ring portion and a handle portion. A retainer that holds a plurality of wedge members is disposed inside the ring portion. Wedge guide grooves are formed on the inner circumferential surface of the ring portion. Each of the w... | 05/02/2006 |
| 7017451 | Locking structure of unidirectional spanner A locking structure of a unidirectional spanner comprises a spanner body having a receiving chamber and at least one directional control communicated with the receiving chamber; a toothless ratchet receiving in the receiving chamber; at least one directional control... | 03/28/2006 |
| 7017453 | Reversible ratchet-type wrench A wrench includes a handle, a head extending from the handle and having a hole for rotatably receiving a drive member, and a web defined between the handle and the head. The web includes a side and a compartment communicated with the hole of the head. An opening is ... | 03/28/2006 |
| 6993997 | Ratchet wrench A ratchet wrench including a housing with a handle extending therefrom. A rotor is positioned within an opening in the housing. The rotor includes a crosspiece having a polygonal cross-section and a downwardly extending stem for the selective attachment of a socket.... | 02/07/2006 |
| 6990877 | Torque wrench A torque wrench includes a pressure handle, a sheath end, a directional brake module, an overload movement ring, rolling rods, rolling beads and spring bolsters. The overload movement ring is provided between the brake section of directional brake module and the ass... | 01/31/2006 |
| 6978700 | Wrench assembly A wrench assembly includes a handle and a wrench. The handle includes a head. The wrench includes a first annular ring non-rotationally put in the head of the handle, a second gear rotationally installed in the first annular ring for engagement with a tool bit and a... | 12/27/2005 |
| 6978988 | Free-floating hydraulic clamping device with edge-gripping arbor The present invention provides a workholder and a method for securing a work piece by engaging either a bore contained in the work piece or by gripping the edge of the bore of the work piece. The workholder includes a support platform, and a bore clamping device tha... | 12/27/2005 |
| 6971286 | Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions A ratcheting wrench includes a handle, a head extending from an end of the handle and having a hole communicated with a compartment in the end of the handle, a drive member rotatably mounted in the hole of the head, and a ratcheting mechanism. The drive member inclu... | 12/06/2005 |
| 6951154 | Ratchet socket tool A socket tool includes a handle and a socket is movably mounted to one of two ends of the handle. A groove and a plurality of notches are defined in the outer periphery of the end of the handle. The socket has two passages defined through a wall of the socket and an... | 10/04/2005 |
| 6915722 | Clamping nut and tool holder with the clamping nut, and spanner This invention provides a clamping nut which prevents, at the time of rotation of the clamping nut, a fastening force that is imparted in the radial direction of the clamping nut towards the inside of the clamping nut, from operating on a converting part formed on t... | 07/12/2005 |
| 6820520 | Ratchet wrench having a rigid locking structure A ratchet wrench having a rigid locking structure includes a wrench body, a ratchet wheel, a pawl member, and a restoring member. Thus, the support blocks of the pawl member are urged on the wall of the receiving chamber of the wrench body, thereby forming a double-... | 11/23/2004 |
| 6807881 | Ratchet wrench having switch locking device A ratchet wrench includes a driving head having two actuating surfaces and a corner formed in a chamber, a driven member rotatably received in the driving head, and a rod engaged between the driving head and the driven member and movable across the corner to engage ... | 10/26/2004 |
| 6792830 | Unidirectional ratchet wrench A ratchet wrench is provided which includes a handle having a head on the handle, a rotatable gear disposed in the head and having ratchet teeth, and a pivotable pawl engaged with the gear to allow ratcheting rotation of the gear in a first direction and prevent rat... | 09/21/2004 |
| 6769328 | Hand tool A hand tool for applying a torque to a threaded fastener includes a tool body having an opening and a fastener engaging mechanism rotatably mounted in the opening. A control assembly comprising a cylindrical roller, spring assembly and control switch are mounted wit... | 08/03/2004 |
| 6742418 | Torque wrench A torque wrench is formed by a hollow handle, a sheath tube, a head, a slider, a torque transmitting mechanism, a torque adjusting mechanism, etc. The sheath tube covers the front half of the hollow handle with a predetermined gap between the inner and outer surface... | 06/01/2004 |
| 6612205 | Ratchet A ratchet includes a handle and a head, the head has an open receiving surface wherein an insert is disposed therein and of a size smaller than the open receiving surface. A portion of the open receiving surface includes a bearing surface against which th... | 09/02/2003 |
| 6575058 | Analog position ratchet mechanism A wrench device has a bearing-type clutch for providing a unidirectional rotational force and an opposite unidirectional independent rotation. The device includes at least one bearing movably disposed in a tapering space between primary and secondary bodi... | 06/10/2003 |
| 6516688 | Hand tool A hand tool for turning sockets connectable to nuts and bolts has a handle attached to a head having an inside cylindrical surface. A body joined to a member for holding a socket has a plurality of pockets facing the cylindrical surface and chord ramps at... | 02/11/2003 |
| 6367354 | Dual analog and ratchet wrench A wrench device has a bearing-type clutch for providing a unidirectional rotational force and an opposite unidirectional independent rotation. The wrench device includes both a bearing-type engagement for use at lower torques, and a ratchet pawl for use a... | 04/09/2002 |
