1975-05-21
1976-12-07
Pinkham, Richard C.
Undertaking
272140, 272138, A63B 2122
Patent
active
039958531
ABSTRACT:
The exercising device has a housing which is attached to a stationary surface. A cord which has a hand grip on its free end can be pulled out of the housing against the adjustable internal resistance of the exercising device. The amount of internal resistance can be varied by means of a control knob. A spring-powered cord retractor reel rewinds the cord back into the housing when the cord is released. The internal resistance is quantitatively adjusted by a friction brake mechanism including a fixed annular brake shoe, a rotatable annular brake disk, and a mechanism for continuously clamping the brake shoe against the brake disk. An automatic mechanism is provided to lock the brake disk to the cord retractor reel as the cord is pulled out of the housing, and to unlock the brake disk from the cord retractor reel as the cord is rewound into the housing. Optionally, the cord is passed around a guide roller which can be selectively immobilized as the cord is pulled out of the housing so that the guide roller acts as a capstan.
REFERENCES:
patent: 518967 (1894-05-01), Poole
patent: 1650417 (1927-11-01), Benniger
patent: 1909461 (1933-05-01), Costa
patent: 3544105 (1970-12-01), Latta
Browne William R.
Pinkham Richard C.
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