1981-06-25
1983-07-05
Johnson, Richard J.
Undertaking
128 25R, A63B 2302
Patent
active
043914438
ABSTRACT:
An exercise apparatus which includes a ring shaped cushion member dimensioned and configured to freely allow a human torso to enter therein in generally axially aligned relationship and with clearance about at least a portion of the associated human torso. The apparatus includes structure for supporting the ring shaped cushion member for rotational movement about the axis thereof and structure for receiving the feet of a user disposed in axial spaced relationship from the ring shaped cushion member.
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patent: 3716231 (1973-02-01), Martin
patent: 4109909 (1978-08-01), Csutor
patent: 4113250 (1978-09-01), Davis
Johnson Richard J.
Smith Robert S.
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