Pliers

Details Pliers Pliers

1998-08-19

2000-07-04

Scherbel, David A.

Tools

Tool jaw

Jaw-actuating means

81367, B25B 712

Patent

active

060822317

ABSTRACT:
A pair of pliers includes a body, a movable handle, a movable jaw, a push block, and a pull element. The movable handle and the movable jaw are both connected pivotally to the body so that they can displace about an angle. When the movable handle turns in the direction of the body, it can bring the push block to displace therewith so that a U-shaped end push portion of the push block press against a curved rack portion at the bottom face of the lower portion of the movable jaw, causing the curved jaw teeth of the movable jaw to close in the direction of a fixed jaw. And when the movable handle and the end push portion disengage from the front acting teeth of the curved rack portion, they can press against the rear acting teeth of the curved rack portion to clamp pipes of a larger contact surface. When the movable handle is turned outwardly away from the fixed handle, the pull element is utilized to cause the movable jaw to pull and turn quickly to a desired angle. For small-diameter pipes, pressure can be applied directly on the upper portion of the movable jaw to turn the pipe in a single operation.

REFERENCES:
patent: 2750826 (1956-06-01), Lisbon
patent: 3600986 (1971-08-01), Baldwin
patent: 4062218 (1977-12-01), Wiener

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