Abstract: A wrench includes a first part and a second part which is overlapped on the first part and is pivotable relative to the first part. The first part has a first clamping space and the second part has a second clamping space which is located corresponding to the first clamping space. The first clamping space is defined by two first jaws. The second clamping space is defined by two second jaws. When an object is clamped by the first and second parts, the second part is able to be pivoted an angle relative to the first part to allow the object to be firmly clamped by the first and second parts.

Abstract: An adjustable dual-range wrench including an elongate handle and a fixed jaw carried by the handle. The fixed jaw includes multiple teeth disposed linearly along the jaw. A hook jaw is pivotably coupled to the handle opposite the fixed jaw. A toothed lobe is adjustably positioned along the fixed jaw between an outer engagement region sized to engage a first range of sizes and an inner engagement region sized to engage a second range of sizes. The hook jaw comprises a first set of teeth associated with the outer engagement region and a second set of teeth associated with the inner engagement region.

Abstract: The invention relates to a ring ratchet spanner comprising a ratchet head (1) that is closed all the way round, a lever arm (2) that is seated on the ratchet head (1) and is intended for actuating the spanner, a spanner part (3) that is rotatably mounted in the ratchet head (1), a serrated ring (4) that is provided on the outer circumference of the spanner part (3), and a locking element (5) that interacts with the serrated ring (4). The object of the invention is to create a ring ratchet spanner that can be comfortably placed on any nut and easily actuated when working on a wide variety of pipelines.

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: The invention is an adjustable wrench comprising a handle with a terminal end and grip end, the terminal end defining a lower bolt claw. A jackscrew is slidably coupled to the handle, the jackscrew being movable to control the movement of the upper and central bolt claws. The upper, central, and lower bolt claws are fitted to the shape of a standard hexagonal bolt head, being adjustable to different sized bolts upon terminal or distal movement of the jackscrew relative to the handle. The central bolt claw is fitted through a slot in the upper bolt claw which defines an inclined ramp surface such that movement of one claw is coupled to movement of the other claw. The claws move cooperatively in reaction to the stationary, lower bolt claw to form a tightly fitted surface for a bolt head.

Abstract: The adjustable wrench has two wrench elements each having a jaw portion and a body portion, each body portion having angled tongues and grooves, slideably mounted opposite one another with the jaw portions opposing each other. Between the two body portions is an actuator having two sides. Each side has angled tongues and grooves corresponding to and slideably engaging the angled tongues and grooves of each of the body portions. The actuator moves along a longitudinal axis of the handle thereby urging the wrench elements and jaws towards and away from one another depending on the direction of movement of the actuator, by interaction of the inclined grooves, acting as wedges using the inclined plane principle.

Abstract: A pliers having a pair of jaws each of which has an outside surface and wherein at least one of the outside surfaces has a file that is a separate member that is releasably coupled to at least one of the outside surfaces. The file, or files, can be attached to either one or both of the jaws using a variety of coupling mechanisms.

Abstract: A crescent wrench is constructed to include a fixed jaw, a transmission gear wheel pivoted to the fixed jaw, a movable jaw meshed with the transmission gear wheel, a sliding track structure adapted to guide movement of the movable jaw horizontally relative to the fixed jaw, and a handle detachably coupled to the transmission gear wheel and adapted for turning the transmission gear wheel to move the movable jaw horizontally relative to the fixed jaw.

Abstract: A wrench comprises a handle including an end having two lobes, a main jaw, and a movable jaw. The main jaw comprises a first main jaw piece and a second main jaw piece that are formed by pressing. Each of the first main jaw piece and the second main jaw piece includes a first end pivotally connected to the end of the handle and a second end for clamping. Each of the first main jaw piece and the second main jaw piece further includes a track. The movable jaw comprises a first movable jaw piece and a second movable jaw piece that are formed by pressing. Each of the first movable jaw piece and the second movable jaw piece includes a first end having two arcuate recesses for cooperating with the lobes and a second end for clamping. A block is mounted in the first movable jaw piece and the second movable jaw piece and has two ends extending into the tracks of the first main jaw piece and the second main jaw piece, respectively.

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: The universal wrench has a handle and a wrench body with reciprocally displaceable jaws and part-gripping teeth. An abutment end portion of the handle has circularly arranged teeth that cooperate with teeth on a rack provided on one of the jaws. The rack is reciprocally guided in the other jaw. A spring is secured to the handle and to this other jaw. A latch pin presses against the lower circular surfaces of this other jaw to secure the handle in different pivoting positions.

Abstract: An open-end wrench, which is self-adjusting and ratcheting, clamps at least four side surfaces of a nut or bolt head, and is adjustable to fit a range of sizes.

Abstract: A self-locking wrench includes a movable jaw which can be moved by a manual actuator. Motion of the actuator is transmitted to the movable jaw by a leaf spring. When moving the movable jaw toward an open position, the leaf spring becomes deformed and stores energy so as to be able to subsequently drive the movable jaw toward a closed position when the actuator is released.

Abstract: A gear wrench includes a lever 10 having a handle 11 at a distal end and a sector pinion gear 13 at a proximal end, rotatable in a cavity 26 of a fixed jaw body 18 by means of a pivot 14. The teeth of the pinion engage the teeth of a rack 21 disposed on a sliding jaw 25 so that rotation thereof adjusts the working size of the wrench. The pivot 14 is tangential to the sliding surface 85 of the sliding jaw thereby to ensure gripping pressure and turning of an object as small as the wrench is designed for. A spacer 27 causes the teeth of the rack to engage the pinion unless it is displaced to allow the rack to withdraw to the rear of the pinion, thereby to adjust the relative positioning of the sliding jaw and the fixed jaw. Gripping surface inserts 51, 52 have threads 59, 66 on one side for pipes, and are smooth on the other side for fittings, nuts and bolts; the inserts are held in place by thumb screws 53, 54 and stabilized by tabs 60, 61, 70, 71.

Abstract: A wrench of the type having one handle produced by the manufacturing processes of drop forging and machining, incorporating a pivot point that acts as a fulcrum for a cam member that is integral with a wormwheel segment. The cam member terminates in the recess of a moveable jaw member which provides the surface for the cam to advance or retrack the jaw member toward or away from a fixed jaw that is integral with the handle member. The wormwheel is meshed with a worm gear member that can be rotated, advancing or retracking the moveable jaw member toward or away from a fixed jaw that is integral with the handle member.

Abstract: An open-ended adjustable ratchet wrench having a first jaw with a fastener contact surface thereon is slideably connected to a second jaw with a second fastener contact surface thereon for grasping a nut or bolt. A link member is pivotally attached to the first jaw along a first axis and an elongated handle is pivotally attached at one end thereof to the link member along a second axis, the second axis being parallel to the first axis. A rack having a plurality of teeth thereon is disposed on the second jaw for movement with the second jaw and is in engagement with a pinon gear rotatably attached to the link member about the first axis.

Abstract: This invention is an open end wrench which is self-adjusting and ratcheting, which clamps a nut with a force greater than the nut turning force exerted on the wrench handle and which fits an entire range of nut sizes.

Abstract: An adjustable open-end wrench is formed with a C-shaped base jaw member having an upper base grip-forming portion and a lower tongue-forming portion which is pivotally connected to an elongated handle. An L-shaped, sliding jaw member has a horizontal leg which is slidably guided between the upper and lower portions of the base jaw member. The sliding jaw member has an upright leg forming a movable grip portion opposing the base grip portion. Corresponding, normally interengaging, tooth-like locking formations are formed on the upper end of the handle and the lower edge of the movable jaw member horizontal leg for normally locking the jaw members relative to each other. The handle may be pivoted to temporarily release the interengaging locking formations so that the movable jaw member may be slidably moved relative to the base jaw member for adjusting the distance between the grip portions to accommodate to different size bolts and nuts.

Abstract: Disclosed is a new and improved device for gripping and rotating a workpiece. The device includes an adjustable jaw, adjustable through a rack and pinion gear assembly so that torque applied to the gear member, for example by connecting the gear to a cooperatively fitting ratchet wrench drive handle, causes simultaneous jaw tightening and rotation of the device to achieve rotation of the workpiece without jaw slippage.

Abstract: A plier wrench is provided which has a body with a fixed jaw and a movable jaw slidable relative thereto that carries a rack. A gear engages the rack and moves the movable jaw and in addition a pivotal handle or lever is provided which may be swung toward the main handle or body portion which lever carries a tab that engages and rotates the gear to move the movable jaw toward the fixed jaw.

Abstract: A wrench for turning components such as bolts, nuts, screws or the like wherein a gripping head is pivotally connected to the wrench handle so that with the head gripping the component to be turned, the handle can be pivoted from a position in which it is generally radial with respect to the axis of turning of the component, to a position in which it is more axial relative to the said axis of turning of the component. The wrench preferably has a second gripping head at the other end, and each gripping head is similarly pivoted to the handle. Each head may be pivotable relative to the handle by 90.degree. to each side of a mean position in which the head is in the general plane of the handle.