Tools – Wrench – screwdriver – or driver therefor – Plural pivoted jaws and handle-lever
Patent
1995-09-12
1997-05-13
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Plural pivoted jaws and handle-lever
81 913, 81373, 81901, B25B 1328
Patent
active
056282354
ABSTRACT:
A pair of jaws, having two sets of mutually perpendicular surfaces which are oriented 45 degrees with respect to the direction of jaw motion. During adjustment the jaws move parallel to each other to accommodate different shank diameters. The opening and closing of the jaws for receiving and clamping a shank is accomplished by an overcenter toggle assembly that produces a combination of parallel and rotational motion which secures the shank against the two mutually orthogonal surfaces of the jaw.
REFERENCES:
patent: 3910140 (1975-10-01), Rose
patent: 4438668 (1984-03-01), Solomon
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