Title: Adjustable wrench mechanism

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.

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Inventors: Zeyher, Craig H. (Haddonfield, NJ, US)

Application Number: 591439
Filing Date: 1975-06-30
Publication_date: 1977-03-22
Assignee:
Primary Class(es): 81/170 279/110
Other Classes:
US Patent Ref:

573732	Dec, 1896	Warn	81/170.
594023	Nov, 1897	Krueger	81/155.
2726093	Dec, 1955	Kalenian	279/116.
3765691	Oct, 1973	Saruhashi	279/110.

Other Refs:
Primary Examiner: Smith, Al Lawrence
Assistant Examiner: Smith, James G.
Attorney: Zeyher; Stanley H.