Locknut tool

Details Locknut tool Locknut tool

1994-06-13

1996-06-11

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Spanner

811779, 811242, 81900, B25B 1356

Patent

active

055245110

ABSTRACT:
A wrench for turning locknuts has a C-shaped head pivotally attached by an extension member to a handle. A recessed step extends part-way around an interior arc of the head, and has a radius sufficient to receive the overall diameter of a locknut. The recessed step is terminated by a shoulder at the end of each arcuate arm forming the head; the shoulders extend toward the center of the head and have dimensions and spacing to fit into the spaces between lugs on a locknut. A notch has a common distal boundary with the recessed step and provides free play in the fit of the wrench over a locknut. When the wrench is placed over a locknut the shoulders fit between and engage lugs on the locknut for turning.

REFERENCES:
patent: 2397574 (1946-04-01), Thonet
patent: 2522038 (1950-09-01), Houghton
patent: 2830480 (1958-04-01), Brame
patent: 3383962 (1968-05-01), Harris
patent: 3768345 (1973-10-01), Barnes
patent: 5259277 (1993-11-01), Zurbuchen

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