Equilateral torque drive double-ended socket wrench for hexagonal fasteners

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is an overall left open end to right end perspective view of an equilateral torque drive double-ended socket wrench for hexagonal fasteners, showing my new design;

FIG. 2 is a reverse perspective view, exposing the open right end of FIG. 1, thereof;

FIG. 3 is an elevational side view, which is a mirror image of the opposite elevational side view, thereof;

FIG. 4 is a left open end elevational view of FIG. 1 and 3, thereof; and,

FIG. 5 is a right open end elevational view of FIG. 2 and FIG. 3, thereof.

Referenced Cited
U.S. Patent Documents
3079819 March 1963 Wing
3161090 December 1964 McLellan
4512220 April 23, 1985 Barnhill et al.
4562758 January 7, 1986 Stirling
4598616 July 8, 1986 Colvin
5048379 September 17, 1991 Gramera et al.
Patent History
Patent number: D338146
Type: Grant
Filed: Sep 30, 1991
Date of Patent: Aug 10, 1993
Inventor: Robert E. Gramera (Durango, CO)
Primary Examiner: Alan P. Douglas
Assistant Examiner: J. H. Musgrove
Application Number: 7/767,916
Classifications
Current U.S. Class: D 8/70