Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1991-02-04
1992-10-20
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
482 95, A63B 6916, A63B 21068
Patent
active
051566508
ABSTRACT:
The present invention provides a therapeutic and sports device with a frame including four pivotably interconnected parts comprising: lower, upper, front and rear frame parts, the lower frame part being mounted between the front frame part and the rear frame part by first and second joint respectively; a stand to which supports the lower and front frame parts at a rotation bearing and third joint respectively; a saddle carried on the upper frame part; pedals attached to the lower frame part; a drive wheel for driving a flywheel, the drive wheel being pivotably mounted to the lower frame part; a crankshaft which is immovably connected to the drive wheel at a crankshaft bearing; and a connecting rod connected to the crankshaft at a crankshaft connecting rod bearing and connected to the stand at a stationary connecting rod bearing, the distance between the crankshaft bearing and a line connecting the rotation bearing and the third joint and the distance between the stationary bearing and the rotation bearing being substantially equal to the distance between the crankshaft bearing the line connecting the rotation bearing and the third joint.
REFERENCES:
patent: 1377886 (1921-05-01), Hornig
patent: 2642288 (1953-06-01), Bell
patent: 4300760 (1981-11-01), Bobroff
patent: 4371185 (1983-02-01), Bals
patent: 4561648 (1985-12-01), Wu
patent: 4915376 (1990-04-01), St. Clair
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