Abstract: An electric ratchet wrench as one example of the ratchet wrench includes an electric motor, a holder that rotatably holds a socket via a one-way clutch mechanism, and a spindle configured to convert a driving force from the motor into a reciprocating rotation motion of the holder. A space is provided between the socket and the holder. The space includes large interval portions and small interval portions. The small interval portions are adjacent to the large interval portions in a rotation direction (lock direction) of the socket and have distances smaller than distances of the large interval portions. Additionally, the one-way clutch mechanism includes columnar locking pins disposed between the spaces and have a diameter with a size equal to or less than the distances of the large interval portions and exceeding the distances of the small interval portions.

Abstract: An open-end wrench for ratcheting increments of 30° has a short clamping jaw supported on a wrench handle so as to be pivotable about a first pivot point. A long clamping jaw is supported on the wrench handle so as to be pivotable about a second pivot point. The short clamping jaw and the long clamping jaw are each pressed into a clamping position by a spring load and can be pivoted into a receiving position against the spring load. In the clamping position, the short clamping jaw and the long clamping jaw reach around a hexagonal object. To pivot into the receiving position, the short clamping jaw is pressed against a sliding surface of the long clamping jaw by the spring load. In the clamping position, an opening width the clamping jaws is more than 55% of the distance between two opposite lateral edges of the hexagonal object.

Abstract: A clamp assembly which includes two spaced apart jaw systems each of which has two sets of spaced apart relatively pivotal grip formations, wherein the jaw systems are relatively pivotally movable to position the four sets of grip formations at spaced apart locations on a circumference of a circle, wherein the size of the circumference is determined at least by the extent of relative pivotal movement of the jaw systems.

Abstract: A wrench head includes a first jaw member, a second jaw member, and a third jaw member. The first jaw member includes a first prong and a second prong. The second jaw member includes a third prong and a fourth prong. The second jaw member is pivotally coupled to the first jaw member at a first hinge. The third jaw member includes a fifth prong and a sixth prong. The third jaw member is pivotally coupled to the first jaw member at a second hinge.

Abstract: A wrench device includes a handle bar having a driving head, the driving head having a connection base, the connection base having a guiding wall, a pivoting jaw having a first receiving groove which corresponding to the connection base, the pivoting jaw having a sliding groove opened through the first receiving groove, a sliding jaw having a sliding portion which is movable relative to the sliding groove, a driving opening being formed between the pivoting jaw and the sliding jaw, the sliding jaw having a pushing portion which corresponding to the guiding wall. Under this arrangement, when the handle bar is rotated clockwise, the pivoting jaw is abutted against the upper portion of the driving head, so that the pivoting jaw and the sliding jaw is fixed relative to the connection base; thereby, the driving opening is attached to an object so as to lock or unlock the object.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a work piece to impart work thereto includes a first element and second element connected for relative movement. The second element includes an actuation portion having a plurality of slots. The first element includes gripping elements which are each associated with a force transfer element which engages one of the slots such that movement of the second element relative to the first element actuates the gripping elements to engage the work piece.

Abstract: The present invention can include an apparatus having both a wire nut receiver and a wire insulation stripper thus allowing a user to strip insulation from wires and then connect them using a wire nut with the same apparatus. The apparatus can include a wire nut receiver defining a cavity having a proximal end and a distal end and one or more stripper blades disposed adjacent to the distal end of the cavity of the wire nut receiver. The apparatus can also include a driver, such as for example a hex driver, connected to the wire nut receiver and the one or more stripper blades. Alternatively, the apparatus can be configured such that the diameter of the one or more stripper blades relative to a rotational axis is variable, which in turn allows a user to easily account for different thicknesses or gauges of wire to be stripped.

Abstract: A wrench socket for use on fasteners such as pipework fittings where closed pipework or other obstructions would normally prevent the use of a ring wrench or closed sockets has a plurality of swivel arms pivotally mounted to a socket main body. The swivel jaws can be opened and closed as required around pipework and the fastener. Formations on the swivel arms align with one another when the swivel arms are closed allowing engagement by a drive bar that locks the swivel arms together. The swivel arms cooperate with the socket main body to define a polygonal fastener receiving aperture. The socket main body can be made thin profile to allow the wrench socket to be used in close proximity to obstructions that would prevent the operation of prior art wrenches and wrench sockets.

Abstract: An open-end wrench for quickly turning an object includes a driving end including a first jaw and a second jaw which cooperate together. One of the first and second jaws includes a recess defined therein. Further, a movable engaging member includes a body pivotally fixed in the recess by a pivot. The body is in a surface contact with a lateral wall of the recess, and the recess supports the body. The pivot is inserted through the body and is fixedly engaged with a wall of the recess. Further, an elastic member resiliently engages with the movable engaging member. Furthermore, the open-end wrench is turned in a first turning direction to turn the object and in a second turning direction to move relatively to the object.

Abstract: The present invention generally relates to a T-Handle wrench. In one aspect, a wrench is provided that includes a shaped handle. The wrench further includes a plurality of jaws operatively attached to the handle. The wrench also includes a sleeve member disposed around the jaws. Additionally, the wrench includes a push button assembly configured to move the sleeve member relative to the jaws, wherein the movement of the sleeve member causes the jaws to move between a retracted position and an extended position. In another aspect, a method of operating a wrench is provided.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a work piece to impart work thereto includes a first element and second element disposed for relative movement. The second element includes an actuation portion having a plurality of slots. The first element includes gripping elements which are each associated with a force transfer element that engages one of the slots such that movement of the second element relative to the first element actuates the gripping elements to engage the work piece.

Abstract: An open-end wrench for quickly turning an object includes a driving end including a first jaw and a second jaw which cooperate together. One of the first and second jaws includes a recess defined therein. Further, a movable engaging member includes a body pivotally fixed in the recess by a pivot. The body is in a surface contact with a lateral wall of the recess, and the recess supports the body. The pivot is inserted through the body and is fixedly engaged with a wall of the recess. Further, an elastic member resiliently engages with the movable engaging member. Furthermore, the open-end wrench is turned in a first turning direction to turn the object and in a second turning direction to move relatively to the object.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a work piece to impart work thereto includes a first element and second element connected for relative movement. The second element includes an actuation portion having a plurality of slots. The first element includes gripping elements which are each associated with a force transfer element which engages one of the slots such that movement of the second element relative to the first element actuates the gripping elements to engage the work piece.

Abstract: The present invention generally relates to a T-Handle wrench. In one aspect, a wrench is provided that includes a shaped handle. The wrench further includes a plurality of jaws operatively attached to the handle. The wrench also includes a sleeve member disposed around the jaws. Additionally, the wrench includes a push button assembly configured to move the sleeve member relative to the jaws, wherein the movement of the sleeve member causes the jaws to move between a retracted position and an extended position. In another aspect, a method of operating a wrench is provided.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a work piece to impart work thereto includes a first element and second element connected for relative movement. The second element includes an actuation portion having a plurality of slots. The first element includes gripping elements which are each associated with a force transfer element which engages one of the slots such that movement of the second element relative to the first element actuates the gripping elements to engage the work piece.

Abstract: A pipe and sheet stock handling tool disclosed herein comprises a handle with a forked gripping means at the end which can be placed astraddle one edge of the sheet of metal or the edge of the pipe. Lifting the handle causes the tool to grip said sheet stock and allow simple movement and/or positioning. The fork has gripping teeth (perhaps comprising a biting screw pointed on the end and adjustable and lockable for varying stock thickness) on each jaw that will grab or bite into the stock to provide a stable grip. A variation of the tool (a multi fork version) has one fork on a first end of the handle and 2 forks (one fork attached to the outer jaw of the other) on a second end. The fork on the first end is similar to the one mentioned above. The forks on the second end comprise a larger simple fork with yet another fork attached with a screw on the outer jaw and an opposing smoothly curved inner jaw specially designed for soft metal (such as copper) which may need to be handled without marring.

Abstract: A spanner socket for application with conventional hand tools such as ratchet drivers and fixed wrenches employed for imparting torque to a work piece about an axis of rotation includes a generally cylindrical shaped base member which defines a predetermined number of engagement surfaces which are circumferentially arranged around the axis of rotation. The engagement surfaces are employed for releasably coupling with the associated hand tool. Two or more elongated drive pins are carried by the base member for rotation therewith about said axis of rotation. Each drive pin defines an axis of elongation, which is parallel to the axis of rotation and spaced from the axis of rotation for engagement with the work piece for the application of torque thereto.

Abstract: Disclosed is a spanner which is generally used as a typical tool for tightening or releasing a bolt. The spanner is capable of tightening or releasing a bolt continually in one direction by the effect of a toggle bar (400) pivotally mounted on a jaw of two jaws (200, 300) of the spanner head in a state that the toggle bar is urged to pivot toward one direction. A protrusion (30, 32) is formed on a distal end of the other jaw of the spanner head for gripping an angular portion of the bolt head so that it is possible to prevent the spanner head being readily disengaged from the bold head.

Abstract: A spanner includes an upper jaw, a handle, a lower jaw, and a resilient member. The upper jaw includes an upper jaw portion, and a pivot portion, and has a front pivot hole and a rear pivot hole both of which extend through the pivot portion. The handle has a connection end extending into the pivot portion and pivoted to the upper jaw at the rear pivot hole. The lower jaw has a lower jaw portion, a tail portion, and an insert part projecting into the pivot portion of the upper jaw. The insert part is pivoted to the upper jaw at the front pivot hole. The resilient member is disposed between the tail portion and the connection end to bias the tail portion away from the connection end so that the lower jaw portion is biased toward the upper jaw portion.

Abstract: A self-energizing and de-energizing adjustable gripping tool for engaging a workpiece to impart movement thereto includes a first element and second element connected for relative angular movement. The second element includes an actuation portion having a plurality of slots. Each of the slots includes a first section and a second section wherein the first and second sections each define divergent paths. The first element includes a gripping portion having a plurality of gripping elements and a plurality of aligning elements. Each gripping element has a pin connected thereto. One of the aligning elements is disposed between a pair of adjacent gripping elements.

Abstract: A tool (1) comprising a head (4) having at least two engaging surfaces (10) for driving the screwing member by its at least partially matching shape and a device (5) for driving the head rotation. The head globally behaves as a single-piece part when the screwing member is driven in rotation. The head includes a zone (7) linking the engaging surfaces and parts (9) transmitting to the engaging surfaces a rotation force applied on the driving device. The linking zone is located between the force-transmitting parts and the engaging parts. The head is designed such that the action of the rotational driving device on the force-transmitting parts tends to deform the shape of the head so as to bring the engaging surfaces closer to each other when a rotational driving force is applied via the driving device on the screwing member. The present invention is, for example, applicable to flat open-end wrenches.

Abstract: A screwdriver grip including a tool section, a connecting section and a grip. A front end of the tool section is disposed with a working section and a rear end of the tool section is formed with a pivot section pivotally connected with a pivot cavity of the connecting section, whereby the tool section can be pivotally rotated relative to the connecting section. The grip is back and forth sliably fitted on the connecting section. A locating member is disposed between the connecting section and the grip. When the grip is moved forward or rearward to a certain position, the locating member fixedly locates the grip on the connecting section. The grip can be moved rearward and the connecting section can be pivotally rotated by a certain angle for a user to easily hold the grip. Alternatively, the grip can be moved forward to shorten the length of the screwdriver.

Abstract: A tool to grip the outer periphery of an object being adaptable, for example, to remove a collar locked to the threaded shaft of a frangible fastener or operate as a drill stop. The tool includes an outer cylinder having a threaded portion and an inner cylinder having complementary threaded portion. A collet is disposed in the volume defined by the outer cylinder and is positioned to receive an axial force from the inner cylinder when translated via rotation with respect to the outer cylinder. The collet has a segment removed to permit the collet to decrease in size upon application of a constrictive radial force. The collet further has a frusto-conical outer surface that acts upon a complementary surface on the inner portion of the outer cylinder. When the collet is acted upon by the inner cylinder, a compressive radial force is applied thereto, which results in the collet constricting to securely and nearly uniformly grasp any object located within the collet.

Abstract: A combination wrench with adjustable heads is provided. The wrench includes a handle and a open head and box head respectively pivoted to two ends of the handle. The open head is combined with a first and a second clamping jaws in shear arrangement. The box head is combined with a first and a second web pivoted together at their distal portions. When rotate the handle counterclockwise, both the open head and the box head can be able to firmly comp a wording object and then to fasten or unfasten the object. The handle can make back runs when it rotates clockwise.

Abstract: A tool includes a head having a fixed jaw, a movable jaw slidably engaged in the head and movable toward and away from the fixed jaw for clamping the fastener to be driven. A handle has a portion pivotally secured to the head at a pivot shaft and has an actuation portion selectively engaged with the head via gears and a pinion to force the movable jaw toward the fixed jaw and to drive the fastener. A pin is slidably engaged in the handle for limiting a rotational movement between the handle and the head. A spring may bias the movable jaw toward the fixed jaw.

Abstract: Wrench structure for placement on over a generally circular workpiece in either a lateral or an axial direction and having a drive head with a cavity formed by a base member and an access cap, a bore formed thru the base member and cap around a rotational axis for accommodating the workpiece, a plurality of gripping jaws pivotally mounted within the cavity and arranged in a substantially circular pattern around the rotational axis and having gripping faces extending at least partially into the bore, each face being knurled and formed substantially on a radius line which makes an angle from about 6.0° to about 25° with a longitudinal axis of the jaw at a lateral midpoint of the face, and each face thereby having a neutral contact portion and a working contact portion.

Abstract: A wrench has a pair of jaws that are disposed on a handle and are spaced to define an opening for a workpiece. A pair of plates, each of which includes a workpiece engaging surface are mounted on the jaws for selective movement between first and second positions. In the first position, the plates are immobile with respect to each other so that rotation of the handle in a first direction causes the plates to grasp the workpiece between the engaging surfaces and turn the workpiece in the first direction. In the second position, a first one of the plates is pivotable with respect to a second one of the plates so that rotation of the handle in a second, opposite direction causes pivoting of the first plate and allows the engaging surfaces to slide over the workpiece, thereby allowing the workpiece to remain stationary.