Undertaking
Patent
1977-09-26
1978-10-24
Johnson, Richard J.
Undertaking
272900, A63B 2300
Patent
active
041218256
ABSTRACT:
A portable foot anchor that removably engages the lower portion of a door when the latter is in a closed position to permit a sling that forms a part of the anchor to be engaged by a foot of the user.
The anchor when so disposed removably holds the foot of a user in a fixed position, and permits the user to exercise the balance of his body by moving desired portions thereof relative to the stationary positioned foot.
REFERENCES:
patent: 2050652 (1936-08-01), Fleming
patent: 2425971 (1947-08-01), Walker
patent: 2622663 (1952-12-01), Burd
patent: 4060240 (1977-11-01), Dunston
Babcock William C.
Johnson Richard J.
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