Isokinetic oscillating exerciser

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Description

FIG. 1 is a perspective view of an isokinetic oscillating exerciser showing my new design;

FIG. 2 is a front elevational view thereof, the rear view being a mirror image thereof;

FIG. 3 is a right side elevational view thereof, the left side view being a mirror image thereof; and

FIG. 4 is a top plan view thereof, the bottom view being a mirror image thereof.

Referenced Cited
U.S. Patent Documents
405128 June 1889 Stockburger
1254974 January 1918 Briggs
2396106 March 1946 Kusznir
3108646 November 1963 Klein
3497214 February 1970 Kusznir
4210323 July 1, 1980 Feather
4305582 December 15, 1981 Barton
4964633 October 23, 1990 Hymanson
Patent History
Patent number: D321733
Type: Grant
Filed: Oct 27, 1989
Date of Patent: Nov 19, 1991
Inventor: Bruce Hymanson (Playa del Rey, CA)
Primary Examiner: Charles A. Rademaker
Law Firm: Poms, Smith, Lande & Rose
Application Number: 7/428,075
Classifications
Current U.S. Class: D21/191