Torque type hand screwdriver

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Description

FIG. 1 is an isometric view of a torque type hand screwdriver, showing my new design;

FIG. 2 is an end view thereof, as taken from the right hand end of FIG. 1;

Screws are projections thereof.

Referenced Cited
U.S. Patent Documents
1239131 September 1917 Shay
1558763 October 1925 Rossberg
1560834 November 1925 McMenimen
3884282 May 1975 Dobrosielski
Patent History
Patent number: D257759
Type: Grant
Filed: Feb 8, 1978
Date of Patent: Jan 6, 1981
Inventor: Dana Peterson (San Diego, CA)
Primary Examiner: W. Stallard
Application Number: 5/876,189
Classifications
Current U.S. Class: D 8/85; D 8/83; Including Discrete, Separately Usable Inserted Portions (81/439); 81/177R
International Classification: D0804;