Air chamber leg exercising device

Details Air chamber leg exercising device Air chamber leg exercising device

1978-08-02

1980-05-27

Browne, William R.

Undertaking

272DIG1, A63B 2100

Patent

active

042046750

ABSTRACT:
A pair of laterally spaced foot treadles are hinged at their front ends to one end of a hollow base and normally are held in an inclined position by springs. Mounted between each treadle and the base is a normally inflated flexible air chamber that communicates with an air inlet and an air outlet in the base provided with check valves. The outlets of the outlet valves are connected by a conduit that is provided with an exhaust valve, the opening of which is resisted when either treadle is depressed, whereby it requires effort to expel air from the underlying chamber.

REFERENCES:
patent: 750593 (1904-01-01), Cady
patent: 2714011 (1955-07-01), Albee
patent: 3167312 (1965-01-01), Blanchard
patent: 3734496 (1973-05-01), Rubin
patent: 3821951 (1974-07-01), Giles
patent: 4065124 (1977-12-01), Egan
patent: 4111416 (1978-09-01), Jinotti

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