Exercise shoe sit-up apparatus

Details Exercise shoe sit-up apparatus Exercise shoe sit-up apparatus

1978-08-21

1980-01-08

Johnson, Richard J.

Undertaking

272900, A63B 2302

Patent

active

041825101

ABSTRACT:
A foot restraining device for use during sit-up exercises. A rectangular platform which is tilted downward at a predetermined angle from its rear edge to its front edge is provided at its front edge with upwardly projecting, spaced apart jaws designed to straddle the bottom edge of a room door. A strap is used to bind the user's foot to the platform so that as he performs a sit-up, his foot is prevented from rising upwardly.

REFERENCES:
patent: 1456317 (1923-05-01), Lauer
patent: 1905019 (1933-04-01), Turner
patent: 2046653 (1936-07-01), Petcoff
patent: 2050652 (1936-08-01), Fleming
patent: 2425971 (1947-08-01), Walker
patent: 3134592 (1964-05-01), Sharkey
patent: 3913907 (1975-10-01), Baker
patent: 4116434 (1978-09-01), Bernstein

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