Wrench with rack and segment gear linkage

Details Wrench with rack and segment gear linkage Wrench with rack and segment gear linkage

1988-04-21

1989-01-17

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Sliding jaw, handle-lever grip

81356, 81362, 81384, B25B 1312

Patent

active

047979658

ABSTRACT:
A wrench of the type having two handle members pivotally connected to one another at a pivot point. Each handle member terminates in a jaw member. Advancing a screw member causes one of the handle members to rotate about the pivot point so that the jaw members are brought together. A pair of slots translate the rotating motion of the handle member about the pivot point into linear components. The jaw members at the end of each handle are biased apart from one another by a spring, but the bias may be overcome by squeezing the handle or by advancing the screw member. When the screw member is fully retracted, the spring separates the jaw members. When the spring member is advanced, it prevents separation of the jaw members.

REFERENCES:
patent: 2156529 (1939-05-01), Day
patent: 2481866 (1949-09-01), Petersen
patent: 2605663 (1952-08-01), Aden
patent: 2650511 (1953-09-01), Aden
patent: 2827814 (1958-03-01), Israel
patent: 3290970 (1966-12-01), DeLucia
patent: 3608405 (1971-09-01), Schmidt
patent: 4094215 (1978-06-01), Hudson
patent: 4274312 (1981-06-01), Finn

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