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US Patent: 4,512,221
Electric Powered Adjustable Wrench
John A. Picone - Island Park, NY

USPTO Classifications:
81/165, 81/170

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches


Not known to have been produced

none listed

Patent Dates:
Applied: Aug. 25, 1983
Granted: Apr. 23, 1985

Patent Pictures:
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An adjustable jaw end wrench, in which the adjustable jaw is operated by a worm gear, the worm gear is meshed with the rack of the movable jaw and the worm gear is driven by an electric motor. Linear motion propelling the jaw open and/or closed is produced by the electric motor. Batteries in the handle provide the power for the electric movement and a DPDT (Double Pole Double Throw) switch controls the function of the wrench.

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