Abstract: A locking pliers is provided with two pivotably joined plier arms each including a handle and a casing member having a channel; two jaw carriers each including a jaw and an arm member slidably disposed through the channel, the arm member including external teeth on top and bottom respectively; a biasing member put on the pivot joint and including two arm elements each having a hook end fictionally put on the top teeth of the arm member; and two rollers each including teeth and rotatably disposed on a bottom of the channel, the teeth of the roller being in rotatable tooth engagement with the bottom teeth of the arm member. The bottom teeth of the arm member are lockingly engaged with the teeth of the roller when a force is exerted on an exposed portion of the arm member.

Abstract: One embodiment of a locking pliers includes a first stationary jaw carrier comprising a first jaw at one end; a second stationary jaw carrier comprising a second jaw at one end; a bent first handle integrally formed with the first stationary jaw carrier; a bent second handle joined the first handle at a spring-actuated pivot joint and engaged with the other end of the second stationary jaw carrier; a self-adjusting locking unit disposed between the first and second handles and comprising a spring-actuated release lever; a locking assembly comprising a slide bar having one end fixedly secured to the other end of the second stationary jaw carrier and the other end inserting into a portion of the second handle between the pivot joint and the other end of the second stationary jaw carrier, and a spring-actuated release lever member lockingly put on the slide bar.

Abstract: A bar clamp includes a slide bar; a housing mounted on the slide bar; a rear handgrip extending from the housing; a forward trigger handle extending from the housing, a sliding block releasably mounted on the slide bar in front of the housing; a fixed jaw carrier having an adaptable first jaw at one end; a moveable jaw carrier having an adaptable second jaw at one end; a first coupling mechanism for releasably securing the housing to the fixed jaw carrier; and a second coupling mechanism for releasably securing the sliding block to the moveable jaw carrier.

Abstract: One embodiment of a locking pliers includes a first stationary jaw carrier comprising a first jaw at one end; a second stationary jaw carrier comprising a second jaw at one end; a bent first handle integrally formed with the first stationary jaw carrier; a bent second handle joined the first handle at a spring-actuated pivot joint and engaged with the other end of the second stationary jaw carrier; a self-adjusting locking unit disposed between the first and second handles and comprising a spring-actuated release lever; a locking assembly comprising a slide bar having one end fixedly secured to the other end of the second stationary jaw carrier and the other end inserting into a portion of the second handle between the pivot joint and the other end of the second stationary jaw carrier, and a spring-actuated release lever member lockingly put on the slide bar.

Abstract: A bar clamp includes a driving key including a first key plate, an intermediate second key plate engaged the first key plate, and a rear first spring engaged with the first and second key plates; a locking key including a third key plate, an intermediate fourth key plate engaged with the third key plate, and a rear second spring engaged with the third and fourth key plates; and a spring-biased release button engaged with a protrusion of the third key plate. Pressing the release button against a handle grip will counterclockwise pivot the protrusion to compress the second spring until the third key plate contacts the fourth key plate and the third key plate is disposed perpendicularly to a longitudinal axis of a slide bar. Further pressing the release button will counterclockwise pivot the third and fourth key plates until they are perpendicular to the axis of the slide bar.

Abstract: A bar clamp has an operating handle being in ratchet engagement with end teeth of a slide bar. The operating handle is adapted to pivot counterclockwise to cause a first clamping jaw carrier to displace along the slide bar and then pivot about a lock pin in the slide bar so as to displace a first clamping jaw a sufficiently large distance to securely clamp a workpiece by cooperating with a corresponding clamping jaw.

Abstract: A bar clamp includes a driving key including a first key plate, an intermediate second key plate engaged the first key plate, and a rear first spring engaged with the first and second key plates; a locking key including a third key plate, an intermediate fourth key plate engaged with the third key plate, and a rear second spring engaged with the third and fourth key plates; and a spring-biased release button engaged with a protrusion of the third key plate. Pressing the release button against a handle grip will counterclockwise pivot the protrusion to compress the second spring until the third key plate contacts the fourth key plate and the third key plate is disposed perpendicularly to a longitudinal axis of a slide bar. Further pressing the release button will counterclockwise pivot the third and fourth key plates until they are perpendicular to the axis of the slide bar.