A pair of locking pliers includes a first grip structure including a first jaw and an adjustment screw connected to a first handle. A second grip structure cooperates with the first grip structure. The second grip includes a second jaw pivotally connected to the first handle about a first pivot axis and a second handle pivotally connected to the second jaw about a second pivot axis. A lock mechanism is pivotally connected to the second handle about a third pivot axis. The lock mechanism abuts the adjustment screw which restrains the lock mechanism to the first handle. The second handle extends longitudinally and terminates at an end at a first length from the second pivot axis. A second length measures a distance between the second and third pivot axes. The second length is smaller than 0.19 times of the first length.

A switching structure for pliers contains: a fixed clamp jaw, a movable clamp jaw, a first handle, a second handle, an actuation unit, and an adjustable threaded rod. The fixed clamp jaw is disposed on the first handle, the movable clamp jaw is rotatably connected with the fixed clamp jaw and the second handle. The actuation unit includes a spring, a driving post, a pushing post, and a switch element, the driving post has an arcuate section and a push portion. The switch element is rotatably coupled with one side surface of the driving post and pushes an inner surface of the second handle so as to limit a rotatable angle of the driving post and the second handle, the switch element has an arcuately convex face and a flat face which alternatively contact with the inner surface of the second handle.

A safety structure for pliers contains: a fixed clamp jaw, a movable clamp jaw, a first handle, a second handle, an actuation unit, and an adjustment screw. The fixed clamp jaw is disposed on the first handle, and the movable clamp jaw is rotatably connected with the fixed clamp jaw and the second handle. The actuation unit includes a spring mounted on the first handle and between two rotatable connecting portions of the movable clamp jaw, and the actuation unit also includes a driving post rotatably connected the second handle and inserted into the first handle. The actuation unit further includes a threaded post having an arcuate section and includes a pushing post rotatably joined with the second handle and forced by the arcuate section. The driving post has a push portion, and the adjustment screw is screwed into the second handle and abuts against the push portion.

This disclosure is related to an adjustable wrench for engaging work objects. The adjustable wrench has a handle having a handle end and a flat serrated jaw surface. The adjustable wrench also has an L-shaped movable jaw having a lever arm and a serrated jaw, the lever arm having a terminal end and an extension element extending from the terminal end having an opening therethrough. The adjustable wrench further comprises a projection extending from the handle having a tunnel therein for accepting the lever arm of the L-shaped movable jaw and a grip enhancing apparatus.

An example pair of locking pliers comprises a first gripping head, a second gripping head, a first handle and a second handle, the first gripping head being mounted to the first handle, the second gripping head being pivotably mounted to the first handle and pivotably mounted to the second handle via a first joint. The pair further comprises a single connecting rod, a sliding mechanism and a locking mechanism, one end of the connecting rod mechanism being pivotably mounted to the second handle via a second joint, the other end being pivotably mounted to the sliding mechanism via a third joint, the sliding mechanism and the locking mechanism being slidably mounted to the first handle.

Tire bead holding pliers includes a first jaw having a lipped plate configured to engage an outboard side of a wheel rim to locate the pliers, and a second jaw defined by a first and second hook and configured to curve around the wheel rim, move toward the first jaw, and engage an inboard side of the wheel rim as the pliers are tightened. The first hook has a first concave portion facing away from the first jaw and configured to receive a bead. The second hook extends from the first hook opposite the first concave portion, has a second concave portion facing the first jaw, and clamps the wheel rim therebetween. During tire installation or removal, the bead is hooked onto the second jaw, which holds the bead in place during the operation in a hands-free fashion.

A locking pliers preferably includes a fixed jaw, a moveable jaw, a fixed handle, a toggle link, a power link and a moveable handle. The fixed jaw is retained in a first end of the fixed handle. The moveable jaw is pivotally retained in substantially the first end of the fixed handle. An adjustment screw is retained in a second end of the fixed handle. An end of the adjustment screw engages a first end of the toggle link. The moveable handle is pivotally engaged with the toggle link. A first end of the power link is pivotally engaged with a second end of the toggle link. The power link is also slidably engaged with the moveable handle. The moveable jaw is pivotally engaged with a second end of the power link.

A push-pull pliers with hammers utilizing the mechanism of conventional vise-grip locking pliers comprises a fixed jaw with threaded hole and hammer head and a slidable hammer assembly attached to either side of the body of the fixed jaw. Gripping a workpiece, such as a cotter pin, a nail, a tube, etc., the slidable hammer assembly can be used to push the workpiece into its base or to pull the workpiece out of its base. The slidable hammer assembly is detachable from the body of the present invention.

In one aspect there is provided a tool attachment for use with a clamping tool having at least one jaw. The tool attachment comprises a semi-cylindrical member having an inner bore along a bore axis and an external groove suitable to capture part of at least one jaw. In another aspect, a tool attachment assembly is provided for use with a clamping tool having two jaws and for use with polished rod having an outside diameter. The tool attachment assembly comprises a pair of tool attachments wherein the each of the inner bores of the pair of tool attachments are each of such dimensions so as to create a total bore having a inner diameter which is smaller than the outer diameter of said polished rod when each one of the pair of tool attachments is attached to the two jaws and when the clamping tool is in a clamped configuration.

This invention is a crimp head quick-change structure of a crimping tool that enables a crimping tool to quickly replace crimp heads of various specifications. The operating theory of the crimp head quick-change structure of a crimping tool is to utilize: a first crimp head protrusion and a first blocker back section notch pushing each other combines with a first crimp head notch and a first head pushing each other to cause the first crimp head to lodge at first clamp section.