Tubular key

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Description

FIG. 1 is a perspective view of a tubular key showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view of a second embodiment thereof, the only difference residing in the configuration of the open tubular end;

FIG. 8 is a perspective view of a third embodiment thereof, the only difference residing in the configuration of the open tubular end.

Referenced Cited
U.S. Patent Documents
D244081 April 19, 1977 Steinbach
D253160 October 16, 1979 Steinbach
D259764 July 7, 1981 Fonhy
D275932 October 16, 1984 Himbert et al.
3886780 June 1975 Falk
Patent History
Patent number: D290581
Type: Grant
Filed: Nov 1, 1985
Date of Patent: Jun 30, 1987
Inventor: Donald R. Hughes (Simi Valley, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Brian N. Vinson
Attorney: Jack C. Munro
Application Number: 6/793,854
Classifications
Current U.S. Class: D/8347; D/8107; D 8/21