A clamp has: a clamping set and a positioning set. The clamping set has a shaft pivotally connected to a first arm and a second arm, and the shaft is provided with an elastic member. The first arm and the second arm are kept open by the elastic member, and the first and second arms are extended downward with a first handle and a second handle. The first handle is provided with a first pin, and the second handle is provided with a second pin. The positioning set is pivoted on a middle section of the first and second handles with the first and second pins. The positioning set is approximately horizontal, and travel distance of the shaft is greatly reduced, which not only reduces the structural cost, but also effectively improves the smoothness of the shaft movement.

Disclosed are pliers and related methods for punching a hole in a non-flat material without distorting the material. Such pliers may comprise a first member having a first handle and a first jaw, and a second member having a second handle and a second jaw. The first and second members are attached at a connection point to permit pivoting in response to a squeezing force on the handles. The first jaw comprises a punch tip to be received by the second jaw, where the punch tip may have an angled distal end truncating a cross-section of the punch tip. The second jaw comprises a shaped edge facing the punch tip and extending along a length of the second jaw, the shaped edge having substantially the same shape as the non-flat material and comprising an opening having substantially the same shape as the cross-section of the punch tip and to receive the tip therein.

Disclosed are pliers and related methods for punching a hole in a non-flat material without distorting the material. Such pliers may comprise a first member having a first handle and a first jaw, and a second member having a second handle and a second jaw. The first and second members are attached at a connection point to permit pivoting in response to a squeezing force on the handles. The first jaw comprises a punch tip to be received by the second jaw, where the punch tip may have an angled distal end truncating a cross-section of the punch tip. The second jaw comprises a shaped edge facing the punch tip and extending along a length of the second jaw, the shaped edge having substantially the same shape as the non-flat material and comprising an opening having substantially the same shape as the cross-section of the punch tip and to receive the tip therein.

A tool and method of securing a clamp is provided. The tool includes a first handle having a first jaw portion on one end. An arm is pivotally coupled to the first handle, the having a second jaw portion on one end. A second handle is adjacent the first handle. A force adjustment mechanism is rotatably coupled between the arm and the second handle. The force adjustment mechanism has a biasing member operably coupled between the arm and an adjustment member, the force adjustment mechanism further having at least one bearing member disposed between the arm and the adjustment member. The second handle is arranged to rotate relative to the arm based at least in part on a force applied on the second handle by the biasing member via the at least one bearing member.

A tool and method of securing a clamp is provided. The tool includes a first handle having a first jaw portion on one end. An arm is pivotally coupled to the first handle, the having a second jaw portion on one end. A second handle is adjacent the first handle. A force adjustment mechanism is rotatably coupled between the arm and the second handle. The force adjustment mechanism has a biasing member operably coupled between the arm and an adjustment member, the force adjustment mechanism further having at least one bearing member disposed between the arm and the adjustment member. The second handle is arranged to rotate relative to the arm based at least in part on a force applied on the second handle by the biasing member via the at least one bearing member.

An apparatus comprises an adjustable locking plier body. A split jaw top is joined to the plier body. The split jaw top comprises a left jaw and a right jaw. The left jaw and the right jaw are separated by a distance. A bottom jaw is joined to the plier body. The bottom jaw is generally centered on the distance, wherein the bottom jaw and the split top jaw are operative for clamping a work piece inserted between the bottom jaw and the split jaw top.

The invention relates to pliers (1). The pliers might be embodied as crimping pliers (2), cutting pliers or pipe crimping pliers. In the pliers (1) pliers jaws (3, 4) are driven by hand levers (8, 9) via a toggle lever drive (13). The toggle lever drive (13) is not formed by toggle lever rods or toggle lever bars. Instead, imaginary toggle levers are formed by a plurality of toggle lever components (35) which are movable along contact contours (30, 37; 33, 38) relative to each other.

The invention relates to pliers (1). The pliers might be embodied as crimping pliers (2), cutting pliers or pipe crimping pliers. In the pliers (1) pliers jaws (3, 4) are driven by hand levers (8, 9) via a toggle lever drive (13). The toggle lever drive (13) is not formed by toggle lever rods or toggle lever bars. Instead, imaginary toggle levers are formed by a plurality of toggle lever components (35) which are movable along contact contours (30, 37; 33, 38) relative to each other.

A pliers is provided, including a first clamping body and a second clamping body. The first clamping body has two first jaw portions and two first gripping portions, and the two first jaw portions are associated respectively with the two first gripping portions and are capable of being open or closed relative to each other. The second clamping body has a clamping jaw and a second gripping portion, the second clamping body and the first clamping body are pivotally connected to each other at a location between the clamping jaw and the second gripping portion, and the clamping jaw and the two first jaw portions are capable of being open or closed relative to each other.

A push button release mechanism for coupling together two portions of a tool, such as pliers. The push button release mechanism can include a push button and one or more balls pushed in a radially-outward direction by geometry of the push button to pivotally couple the two portions together. The balls are normally pushed outward by an engagement portion. Depressing a push button head axially downward causes the balls to align with a receiving portion, which allows the balls to descend into the interior of the mechanism. The push button release mechanism is also threadably coupled with a threaded opening of one of the portions. The threaded opening can have deformed threads to increase the retention torque required to rotate the push button release mechanism.