Constrictor lock wrench system

Details Constrictor lock wrench system Constrictor lock wrench system

1987-02-05

1988-08-09

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

81117, 81424, 269157, B25B 1328

Patent

active

047620340

ABSTRACT:
This is a constrictor wrench which can compensate for a wrench not being the exact fit to match the nut or object which it is to rotate or hold. The wrench has a first jaw and a second jaw with the face of the first jaw modified so that it has a recess which is substantially arcuate in shape and contour. A swinging jaw is provided which has one edge having a contour matching with the contour of the first jaw. The second edge of the swinging jaw is planar. A pressure arm connects the swinging jaw to the first fixed jaw. Biasing means are provided against the pressure arm to force the swinging jaw along the arcuate face of the top jaw away from the mouth of the wrench.

REFERENCES:
patent: 1109766 (1914-09-01), Landon
patent: 1512363 (1924-10-01), Phleger
patent: 2707412 (1955-05-01), Brame

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