175 results about "Locking pliers" patented technology

A joint of a pair of channel-lock pliers having an adjustable handle and a reference handle that are pivotally connected at a junction includes an elongated hole defined through the reference handle at the junction, a joint hole defined through the adjustable handle at the junction corresponding to the elongated hole and a pivot pin pivotally connecting the adjustable and the reference handles at the junction. The pivot pin has an enlarged first end and a second end, which passes through the elongated hole and the countersunk pivot hole in the handles and extends out of the countersunk pivot hole in the adjustable handle to be pressed and spread to pivotally rivet the handles together and be ground smooth to prevent protruding from the adjustable handle. Consequently, the handles are joined firmly, and appearance of the pliers is nice.

A locking pliers includes a body that supports a fixed jaw and a movable jaw. A lever is pivotably connected to the movable jaw, and a locking mechanism including a stub arm is coupled between the body and the lever to lock the jaws in a closed position. This locking mechanism includes an adjustment screw that is exposed at an end of the body remote from the fixed jaw. The body forms a resilient gripping surface that extends away from the exposed portion of the adjustment screw. This gripping surface extends beyond the end of the lever by at least about 4 inches such that the lever does not obstruct access to the grip. The user can place both hands on the grip to apply large torques to a clamped workpiece once the locking pliers has been locked in place on the workpiece.

A firefighter multi-tool, comprising a head assembly having at least one interchangeable tool head with locking means, a first handle assembly, and a second handle assembly. The first and second handle assemblies house spring-loaded tools within. The at least one interchangeable tool head comprises spring-loaded trauma shears, a bridging head, channel-lock pliers, traditional pliers, an adjustable wrench, needle-nose pliers, a ratchet, and tin snips. A carrying case carries the head assembly having at least one interchangeable tool head with locking means, the first handle assembly, and the second handle assembly. The carrying case comprises a first compartment having a locking mechanism. At least a second compartment mounts upon the first compartment to house the at least one interchangeable tool head.

Locking pliers for being one-handed adjustable, clampable, and releasable. The locking pliers includes a fixed portion, a movable portion, a first apparatus for moving the movable portion relative to the fixed portion a desired amount in order to clamp a workpiece using only one hand, and a second apparatus for releasing the movable portion from the fixed portion in order to release the workpiece using only the one hand. The movable portion is movably connected to the fixed portion. The first apparatus is operatively connected to the fixed portion. The second apparatus is operatively connected to the movable portion.

The self-adjusting locking pliers include a body having a fixed jaw supported at one end. A moveable jaw is pivotably supported on the body at a slidable pivot connection. A linkage transmits a force applied to the handles of the pliers to the jaws and locks the jaws in the clamping position. The linkage allows the angle between the links to be preset to thereby control the clamping force applied to the work piece. The movable jaw is selectively attached to the linkage in one of two positions such that the jaw span may be adjusted without affecting the geometry of the linkage.

A locking pliers tool with an improved dual action driver handle comprising two intersecting handles and interacting jaws. When the user grips the handle forward the resultant force produces a locking action. Conversely, when a rearward gripping force is initiated, the tool releases its grip on the object. A limited amount of energy on the inventive handle produces free movement of the handle and gripping mechanism to lock or release. The system operates with a handle and stationary jaw in conjunction with a second pivotally secured jaw and internal adjustment bolt. A second lever handle rests against the adjustment bolt. An over center toggle link connects the second lever handle to the pivotally secured second jaw. A tension spring interconnects the first handle and the pivotally secured second jaw.

The invention relates to automatic adjusting locking pliers. The automatic adjusting locking pliers are provided with an automatic adjusting device on the basis of the conventional locking pliers to enable the locking pliers to clamp objects with different sizes without adjusting the locking pliers, can adjust a clamping force as required. The automatic adjusting locking pliers solve the problems that the conventional locking pliers have troubled operation, the clamping force of the conventional locking pliers is difficult to control and the like, and belong to the field of machinery. The automatic adjusting locking pliers of the invention comprise a main plier body and an auxiliary plier body, wherein a front end of the main plier body is connected with a jaw (1) and is also hinged with a jaw (2) corresponding to the jaw (1); the other side of the jaw (2) is hinged at the front end of the auxiliary plier body; a connecting rod with a meshing block and an adjusting screw, a meshing pressing block and a guide locking device are arranged between the main plier body and the auxiliary plier body; one end of the connecting rod is hinged with the auxiliary plier body, while the other end is hinged with the meshing pressing block; the meshing pressing block is also hinged with the guide locking device; the inside of the main plier body is provided with a guide rod; and the guide locking device can slide freely on the guide rod, and can be locked on a corresponding position when the meshing pressing block presses. The automatic adjusting locking pliers have the characteristics of compact structure, large adjustable range of the clamping force, strong reliability, convenient use and the like.

A locking pliers includes a fixed handle supporting a fixed jaw, a movable jaw, a movable handle pivotally connected to the movable jaw about a pivotal axis, and a movable pivot unit disposed on the fixed handle and the movable jaw. The pivot unit includes a pivot pin and a pivot hole configured to loosely receive the pivot pin such that, when a manual turning force is applied to the movable handle, the movable jaw is turned clockwise to a locking position. As a result of abutting engagement between the pivot pin and a leading region of the pivot hole, a friction force is generated to hold the movable jaw in a tightening position. The gripping force between fixed and movable clamping surfaces of the jaws can be firm and stable.

A self-adjusting variable grip locking plier for gripping a workpiece. The plier includes a body, a handle, and a wedge. The plier is designed for extremely fast set up and for easily gripping and holding the workpiece with one hand with absolutely no adjustments ever to make, and provides a larger than ordinary jaw capacity in a very compact design. The plier grips and holds the workpiece with a light or tremendous gripping force with no adjustments ever to make, and with an extremely fast unlocking system, while at the same time fitting into the palm of one hand. When the workpiece is grasped, one simply ratchets the handle until the desired grip is obtained. The more times one squeezes the handle the tighter the grip. This automatically locks the plier at the desired grip. To release the plier one simply pushes the wedge back into the body with the palm of one hand.

A clamping device utilizes the mechanism of conventional vise-grip locking pliers to clamp internally or to expand workpieces with adjustable force. The invention comprises a fixed arm, a movable arm with quick release mechanism, a pair of special design, crossed clamping arms with jaws. Also included with the invention is the rear adjustment screw attached to one end of the fixed arm for setting the clamping gap and the clamping force.

Pliers include upper structure including an upper jaw and handle extending therefrom, and lower structure including a lower jaw and handle. The lower jaw may pivot relative to the upper jaw, and the lower handle may pivot relative to the lower jaw. An overcenter linkage operatively connects between the upper and lower structure, biasing the lower handle and jaw away from the upper handle and jaw, respectively, when in a jaw-opening position, and enabling the lower jaw and handle to be retained in a closed configuration when the linkage is in a jaw-closing position. A lock member is movable between a locking configuration preventing pivoting of the lower handle from the closed configuration and retaining the jaws in a closed position, and a release configuration enabling the lower handle to be moved away from the closed configuration, allowing the jaws to move to an open position.

A restricting member with an engaging structure for a pair of locking pliers comprises a first pivoting portion, a second pivoting portion and the engaging structure. The engaging structure extends out of an upper part of the restricting member, so that it can be positioned in a groove of a side handle, and makes a supporting portion of a linking member press against the groove of the side handle. The restricting member not only saves space and cost for it needs no additional subassemblies, but also makes the assembling work more convenient.

The self-adjusting locking pliers include a fixed assembly having a fixed jaw supported at one end. A moveable jaw is pivotably supported on the fixed assembly at a slidable pivot connection. The slidable pivot connection includes a pawl provided with teeth. A rack of teeth includes first and second sets of teeth offset from one another by ½ of the pitch that may each be engaged by the teeth formed on pawl. A lever is attached to the fixed assembly and a linkage transmits a force applied to the lever to the jaws and locks the jaws in the clamping position. The linkage allows the angle between the links to be preset to thereby control the clamping force applied to the work piece. The movable jaw is selectively attached to the linkage in one of two positions such that the jaw span may be adjusted without affecting the geometry of the linkage.