Self-locking and releasing gripping tool

Details Self-locking and releasing gripping tool Self-locking and releasing gripping tool

1990-10-09

1991-10-01

Smith, James G.

Tools

Tool jaw

Crossed handles

81318, 81324, 81339, B25B 706

Patent

active

050522523

ABSTRACT:
A gripping tool, acting as both a pair of pliers and a wrench, self locks and self releases upon application or removal of clamping torque on the handles of the tool, respectively. The locking and releasing mechanism is based on reversible wedging action.

REFERENCES:
patent: 681487 (1901-08-01), Quist
patent: 1271911 (1918-07-01), Kearney
patent: 1408524 (1922-03-01), Long
patent: 1528247 (1925-03-01), Cruickshank
patent: 1625615 (1927-04-01), Kuttes
patent: 2370308 (1945-02-01), Hanson
patent: 3261243 (1966-07-01), Ellison
patent: 3354759 (1967-11-01), Cook
patent: 3681844 (1972-08-01), Priest
patent: 4542669 (1985-09-01), Roux
patent: 4890520 (1990-01-01), Vassiliou

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