Jointed bicycle-simulation device for isometric exercise

Details Jointed bicycle-simulation device for isometric exercise Jointed bicycle-simulation device for isometric exercise

1989-05-04

1990-08-21

Crow, Stephen R.

Undertaking

272126, 272 97, A63B 2100

Patent

active

049499548

ABSTRACT:
A bicycle-simulation exercise device for convalescing and handicapped persons having foot pedals and hand grips which all swing in an orderly fashion in directions not to place undue strain on the person's joints. The lower end of a first upwardly inclined leg-activated bar is pivotally connected to the lower end of a first upwardly inclined arm-activated bar. Adjacent these bars, second leg-activated and arm-activated bars are identically coupled. The two pivot points of the bars are attached to opposed ends of an elastomeric band which is trained about a pulley. In this manner, each of the four bars is mechanically coupled to the remaining bars. Two degrees of operating difficulty are provided by selective insertion of a rod into the pulley. With the rod removed from the pulley, the pulley is allowed to rotate with movement of the elastomeric band to make operation of the exercise device relatively easy. However, insertion of the rod into the pulley aperture locks the pulley and the frictional force created at the elastomeric band-to-pulley interface produces a greater resistance to bar movement.

REFERENCES:
patent: 2603486 (1952-07-01), Hughes
patent: 2772881 (1956-12-01), Fundom
patent: 3467374 (1969-09-01), Auer
patent: 3566861 (1971-03-01), Weiss
patent: 4300760 (1981-11-01), Bobroff
patent: 4391441 (1983-07-01), Simjian
patent: 4434981 (1984-03-01), Norton
patent: 4451033 (1984-05-01), Nestegard
patent: 4463945 (1984-08-01), Spector
patent: 4645200 (1987-02-01), Hix

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