Tire traction unit

Description

FIG. 1 is a top perspective view of a tire traction unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation view thereof, the opposite side being a mirror image of that shown;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is an end elevation view thereof.

The tire traction unit has been shown broken away in the middle in FIGS. 2, 3, and 4 for convenience of illustration.

Referenced Cited
U.S. Patent Documents
D230017 January 1974 Pfoertner
D241734 October 1976 Pfoertner
3431961 March 1969 Pfoertner
3512613 May 1970 Peterson
3770039 November 1973 Pfoertner
4266593 May 12, 1981 Hayashi
4280544 July 28, 1981 White
4300722 November 17, 1981 Simmons
4346748 August 31, 1982 Bagoy et al.
4960160 October 2, 1990 Stacy
Foreign Patent Documents
3038010 February 1988 JPX
Patent History
Patent number: D325896
Type: Grant
Filed: May 15, 1990
Date of Patent: May 5, 1992
Inventor: Rolf Pfoertner (Langley, British Columbia, V3A 4P4)
Primary Examiner: James M. Gandy
Assistant Examiner: Melody Brown
Law Firm: Bull, Housser & Tupper
Application Number: 7/524,061
Classifications
Current U.S. Class: D12/154