Sit-up exerciser

Details Sit-up exerciser Sit-up exerciser

1983-02-09

1985-04-02

Johnson, Richard J.

Undertaking

A01B 2302

Patent

active

045083355

ABSTRACT:
A simple, inexpensive and highly stable sit-up exerciser is disclosed having a horizontal frame and seat. The height and longitudinal position of the ankle-engaging portion of the device is adjustable relative to the seat and, where provided, the knee support, to suit the anatomy of any user.

REFERENCES:
patent: 2759730 (1956-08-01), Berry
patent: 3286708 (1966-11-01), Gartner
patent: 3682475 (1972-08-01), Walker
patent: 4046373 (1977-09-01), Kim
patent: 4337942 (1982-07-01), Sidlinger
Universal 1982-83 Catalog, pp. 12 and 13, Universal, Cedar Rapids, IA, 1981.
1978 Best Products Catalog, p. 364.
1979 Diversified Products Catalog, p. 27.

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