Wrench with supplementary driving lugs formed on its square cros

Details Wrench with supplementary driving lugs formed on its square cros Wrench with supplementary driving lugs formed on its square cros

1997-07-30

1999-06-08

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

8117785, 81 60, 81 631, 81 61, 81 62, 81 63, 81 632, B25B 1300, B25B 2316, B25B 1346

Patent

active

059101970

ABSTRACT:
A plurality of circumferentially-spaced driving lugs are formed on the improved square-drive tang of a wrench, such as a ratchet wrench; and these driving lugs cooperate with a corresponding plurality of recesses or pockets formed in the top portion of an improved interchangeable square-drive socket, thereby providing for improved torque transmission which is supplemental to, and not a substitute for, the square drive. The improved wrench is compatible with conventional sockets, and the improved socket is compatible with conventional wrenches.

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patent: 4817475 (1989-04-01), Kelly et al.
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patent: 5214987 (1993-06-01), Fenton, Sr.
patent: 5216941 (1993-06-01), Kolvereid
patent: 5481948 (1996-01-01), Zerkovitz

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