Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1975-06-30
1977-03-22
Smith, Al Lawrence
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
279110, B25B 1316
Patent
active
040129713
ABSTRACT:
An adjustable composite wrench adapted for use both as a box or socket wrench and as an Allen wrench. A plurality of work-engaging elements are individually mounted for translational movement along radial paths. Restraining means prevent rotational movement of the work-engaging elements relative to the path of movement. Gear means are operatively associated with each of said elements such that rotation of the gear means causes, in cooperation with the restraining means, translational movement of the element along its radial path. Drive means common to each of the individual gear means provide synchronous movement of the gear means and their associated work-engaging elements whereby such elements are brought into engagement with a work piece.
REFERENCES:
patent: 573732 (1896-12-01), Warn
patent: 594023 (1897-11-01), Krueger
patent: 2726093 (1955-12-01), Kalenian
patent: 3765691 (1973-10-01), Saruhashi
Smith Al Lawrence
Smith James G.
Zeyher Stanley H.
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