Friction clutch wrench

Details Friction clutch wrench Friction clutch wrench

1994-05-20

1996-07-16

Kisliuk, Bruce M.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 906, 814265, B25B 1300

Patent

active

055356478

ABSTRACT:
A friction clutch wrench in the style of locking grip pliers for imparting torsion to an object. Jaws open to access the work from the side, and then close and lock rigidly around the work. Once locked inside the jaws, the work engages a friction clutch ratchet mechanism provided in the confronting jaw faces. When the wrench is turned in one direction about the work, the friction clutch grips the work and imports torsion to it. When the wrench is rotated in the other direction, however, the friction clutch permits free rotation of the wrench about the work.

REFERENCES:
patent: 1412688 (1922-04-01), Layton
patent: 2209988 (1940-08-01), Matlock
patent: 2613566 (1952-10-01), Hadley
patent: 2730000 (1956-01-01), Crittenden
patent: 3662867 (1972-05-01), Kinzbach
patent: 3927582 (1975-12-01), Hertelendy
patent: 4770070 (1988-09-01), Sowers
patent: 5249487 (1993-10-01), Armfield

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