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US 2004/0055429 A1Published application
Locking pliers tool with automatic jaw gap adjustment and adjustable clamping force capability
OwnerJohn Andrew Winklerinventor
Life of this patent
Estimating the term…
Abstract
A locking pliers tool which combines a self-locking, frictional brake, gap setting means to set jaw gap size automatically when clamping onto a workpiece, and an over-center linkage clamping means to securely clamp the workpiece in between the opposing tool jaws, and an adjustment means for setting the clamping force to be exerted onto the gripped workpiece.
Claims20
An adjustable locking pliers tool comprising:
- a main tool body including a brake surface,
- a brake handle hingedly connected to the main tool body;
- a clamp handle hingedly connected to the main tool body;
- a clamp jaw hingedly connected to the main tool body;
- a brake jaw hingedly connected to the brake handle such that the brake jaw can rotate to effect a frictional engagement between said brake surface on the main tool body and a brake pad on the brake jaw;
- an over-center linkage operating on said clamp jaw between a release position and a clamp position;
- an actuating arm operably coupled to the over-center linkage to produce said release and clamp positions thereof.
4 more elements
An adjustable locking pliers tool comprising:
- a main tool body including a brake surface;
- a brake handle hingedly connected to the main tool body at a first hinge point;
- a clamp handle hingedly connected to the main tool body at a second hinge point;
- a clamp jaw hingedly connected to the main tool body at a third hinge point;
- a brake jaw hingedly connected to the brake handle at a fourth hinge point such that the brake jaw can rotate to effect a frictional engagement between said brake surface in the main tool body and a brake pad in the brake jaw;
- an over-center linkage connected to the clamp jaw and operating between a release position and a clamp position;
- an actuating arm operably coupled to the over-center linkage to produce said release and clamp positions thereof.
4 more elements
Dependencies are inferred from the claim text.