Abstract: Disclosed is an adjustable wrench including a handle and a working portion. The working portion includes an adjusting device and at least two jaws. The jaws are distributed along the circumferential direction of the working portion, and the adjusting device is arranged such as to adjust the jaws to simultaneously move in a radial direction of the working portion, closer to or away from the center of the working portion, that is, the jaw opening defined by the plurality of jaws are adjustable. The adjustable wrench provided by the invention is adapted for workpieces of various specifications, and can realize rapid adjustment.

Abstract: A multi-size adjustable sleeve has a sleeve body, a controlling unit, and a fixing unit. The sleeve body has a wheel slit formed through the sleeve body. The controlling unit is mounted in the sleeve space and has a wheel, two screw columns, and two clamping plates. The wheel is set in the sleeve body and protrudes out of the wheel slit. The screw columns are connected with the wheel and have reverse thread directions. The clamping plates are movably mounted on the screw columns. The sleeve can adjust the distance between the clamping plates by rotating the wheel, such that the sleeve can be applied for bolts or nuts of different sizes.

Abstract: A tool for removing lug nuts contains a supporting post including an actuating portion and two guiding portions extending outward from two sides of the actuating portion respectively; a screw rod including a head end and a circular extension extending outward from the head end, wherein an outer diameter of the head end is more than that of the circular extension, the circular extension includes a first and a second thread sections; two retaining arm, each including a hole to insert the guiding portion, an aperture arranged on a top end thereof to communicate with the hole, and an orifice secured thereon below the hexagonal hole and having a third and a fourth thread sections to screw with the first and the second thread sections respectively so that after the screw rod is rotated, the retaining arms are driven to close to each other or leave away from each other.

Abstract: An adjustable ratchet head assembly has first and second jaw members that are connected using a pinion shaft and a cogwheel shaft. The pinion shaft has oppositely threaded end portions that engage oppositely threaded pinion shaft receiving bores in a central section of each jaw member. The cogwheel shaft has oppositely threaded end portions that engage oppositely threaded cogwheel shaft receiving bores in a proximate end of each jaw member. A pinion gear is concentric with and engages the pinion shaft. A cogwheel gear is concentric with and engages the cogwheel shaft, and is in driving engagement with the pinion gear. Driving the cogwheel gear will cause rotation of the cogwheel shaft, pinion gear and pinion shaft, and will cause the jaw members to move toward or away from each other. The ratchet head assembly is received in a cylindrical ratchet head body, which is received in a handle assembly.

Abstract: A ratchet wrench is disclosed, which comprises a body unit which has a circular groove at its one side and a stop member; a head unit which includes a housing rotatably passing through a circular groove of the body unit, and a ratchet gear engaged at an outer rim of the housing and is selectively rotatable in one direction as the ratchet gear is engaged with the stop member; a worm screw which is rotatably pin-engaged in the interior of the housing; and a pair of arms of which one end of each arm is inserted into the interior of the housing and is pin-engaged therein with a thread being formed on an upper side of each arm and being engaged with the worm screw.

Abstract: A combination tool for assembling and dismantling a lock nut of a bearing of a wheel axle of a wheeled vehicle includes a middle column, a first clamp block, a second clamp block, a regulating threaded rod, and a support rod. The first clamp block and the second clamp block are located at two sides of the middle column, and each of the first clamp block and the second clamp block has one end provided with a clamp pawl. The regulating threaded rod is extended through the middle column, for adjusting the distance between the first clamp block and the second clamp block. The support rod is extended through the second clamp block, the middle column and the first clamp block, to support and position the middle column, the first clamp block, and the second clamp block.

Abstract: The present invention concerns that of a new and improved adjustable socket that would attach to a ratchet wrench, a drill, or a driver. The adjustable socket would have two socket portions that would each be mounted on a threaded rod. The threaded rod would be located within a central channel and would be connected to adjustment means. Half of the threaded rod would have right-handed thread, while the other half of the threaded rod would have left-handed thread. The adjustment means would allow the two socket portions to be moved closer to or further away from each other for adjustment for different size bolts to be tightened or loosened. A top-mounted square hole would allow a ratchet end to be attached to the adjustable socket.

Abstract: Disclosed is a tool for applying torque to a CPU fan unit and mounting the fan unit onto a mounting structure. The tool includes a pair of mounting pins for engaging the CPU fan unit. The position of the mounting pins is adjustable so that the tool may be used to apply torque to fan units of various sizes. The pins on the tool are configured to be inserted into mounting notches on the outer housing of the fan unit so that torque may be transferred from the tool to the fan unit.

Abstract: Disclosed is a method of applying torque to a CPU fan unit. One embodiment of the method comprises providing a tool having two mounting pins adjustably positioned along a common axis. The position of the mounting pins is then adjusted so that the mounting pins are positioned to engage the CPU fan unit. The pins are then engaged with the fan unit, and the tool is rotated to apply torque to the fan unit, such as for tightening onto a mounting structure.

Abstract: Ratchet wrench gears, for use in standard and pneumatic ratchet wrenches include adjustable jaws that may grip a fastener on at least four sides. The jaws travel on tracks or rails and open and close by means of threaded, floating-cams, which urge upon a protruding cam portion integral to the jaw body. The cams are driven axially by turning a threaded-stem-disc, which may comprise a hollow center, thus allowing for a "through-hole" feature. Various, optional compression-spring means are included to continually bias jaws toward an open position.

Abstract: A tool is disclosed in which components can be grasped and secured using a single actuation motion. A mechanical system converts a single actuation motion into sequential motions at least in part mutually orthogonal. The advantages of this system are one-handed operation and ability to accommodate variations in dimensions of the components to be secured in the tool. A particular device is disclosed which is used in the handling of human prosthesis components during surgery.

Abstract: A new and improved adjustable ratchet wrench apparatus includes a handle assembly and a wrench head assembly which includes a ratchet assembly and a jaw assembly. The ratchet assembly includes a ratchet assembly housing connected to the handle assembly. The ratchet assembly housing is substantially C-shaped and includes a first free-ended portion and a second free-ended portion. A first gap is provided between a first free end of the first free-ended portion and a second free end of the second free-ended portion. The ratchet assembly includes a first ratchet element supported by the ratchet assembly housing. The first ratchet element permits unidirectional rotation of the jaw assembly. The jaw assembly includes a substantially C-shaped jaw assembly housing which is nested within and is supported by the ratchet assembly housing for relative rotation between the ratchet assembly housing and the jaw assembly housing.

Abstract: A wrench that combines the narrow profile of an Open End with the adjustability of a large in profile Adjustable wrench and that meets the "Wrench Clearances for Open End Engineers Wrench 15.degree.", (from SAE Aeronautical Drafting Manual). The turnbuckle principle linked to wedge pins that move through crossing slots provide for parallel movement of two slidably connected wrench-halves. Actuation mechanism is shifted from the standard head location to the intermediate portion of the handle and the ends of the wrench are designed for turning two consecutive size ranges.

Abstract: An automatically controlled socket wrench which comprises a body having handle, a rotating gear member including a pair of jaws which containing a screwing aperture disposed in a supporter extended therefrom and a worm gear member, a controlling wire rope connected to the worm gear member and a button, a stopper for stopping the rotating gear, and a cover for covering the rotating gear assembled with the controlling wire rope and stopper therein whereby when the button is operated, the jaws are caused to open, and after the socket wrench is manipulated around an object, by returning the button and suspending the stopper, the jaws of the socket wrench are automatically and strongly closed around the object.

Abstract: An adjustable wrench socket of the screw adjustment type in which two identical jaws facing each other have a multiple non-slip grip on nut and screw heads and in which the jaw movements are synchronized in respect to the axis of their mutual housing that slidably engages them but controls them in all other unwanted directions and further provides for adaptability to commercial drives and their extensions.

Abstract: An automatic controlling socket wrench comprises a body having a handle, a rotating gear member including a pair of jaws which containing a plurality of racks and a worm gear, a controlling wire rope connected to the worm gear and a button, a stopper for stopping the rotating gear, and a cover for covering the rotating gear assembled with the controlling wire rope and stopper. When the button moves forward, the jaws are caused to open, and after the socket wrench is manipulated around an object, by moving to return the button and suspending the stopper, the jaws of the socket wrench are automatically and strongly closed around the object.

Abstract: A double-jawed wrench head for use with a conventional socket wrench handle is disclosed which allows adjustment of jaw spacing so as to accommodate various sized nuts or lag bolts or the like using only a single head. The head preferably includes a pair of wrench jaws respectively shiftable by means of a worm gear and rack arrangement, with a polygonal aperture provided for receiving the drive stub or block of a socket wrench handle. The worm gear advantageously includes oppositely directed threaded sections for simultaneous shifting of the jaws toward and away from each other.

Abstract: There is disclosed an adjustable ratchet wrench including a disk member with ratchet teeth on its periphery and hub portions of reduced diameter on each side. A centrally disposed rectangular opening is provided in which a double acting lead screw is mounted. A pair of jaws are threadedly mounted on the lead screw for movement toward or away from each other dependent upon the direction of rotation of the lead screw. A two piece body is provided which defines an elongated handle and two parallel, spaced apart members which terminate in a generally circular, enlarged ratchet holding head having circular openings in which the hub portions of the ratchet disk are received. A pawl is provided for controlling the direction of ratchet movement.

Abstract: There is disclosed as the preferred embodiment of the invention an adjustable ratchet wrench including a disk member with ratchet teeth on its periphery and hub portions on each side of reduced diameter. A centrally disposed rectangular opening is provided in which a double acting lead screw is mounted. A pair of jaws are threadedly mounted on the lead screw of movement toward or away from each other dependent upon direction of rotation of the lead screw. A two piece body is provided which defines an elongated handle and two parallel, spaced apart members which terminate in a generally circular, enlarged ratchet holding head having circular openings in which the hub portions of the ratchet disk are received. A pall is provided for controlling the direction of ratchet movement.

Abstract: A fluid operated wrench for tightening and loosening threaded connectors comprises a housing having a first axis, a drive arranged in the housing and providing a driving force in an axial direction, an engaging unit of one type provided in a polygonal opening for engaging respective threaded connector to be turned and an engaging unit of another type provided with connecting means for attaching exchangeable socket projections thereto made to engage respective threaded connector to be turned and both including an engaging element connected with the drive for turning about a second axis which is transverse to the first axis, the engaging units being mounted exchangeably so that the engaging units of one type can be removed and replaced by the engaging units of another type or vice versa, a structure in the housing for exchangeably mounting the engaging units so that the engaging unit of one type can be removed and replaced by the engaging unit of another type and vice versa, and a unit for providing reaction in