Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1994-07-28
1995-03-14
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
482 59, A63B 2100
Patent
active
053972864
ABSTRACT:
The transmission system of an exercise bicycle includes a first drive shaft mounted rotatably on the rear end portion of a frame and provided with foot pedal cranks on two ends thereof, second and third drive shafts mounted rotatably on the frame, a one-way clutch secured on the second drive shaft, a first sprocket mounted securely on the first drive shaft, second and third sprockets mounted securely on the second drive shaft, a fourth sprocket mounted securely on the third drive shaft, a fifth sprocket mounted securely on an axle of a resistance wheel that is mounted rotatably on a front end portion of the frame, a first drive chain trained between the first sprocket and the one-way clutch, a second drive chain trained between the second and fifth sprockets, and a third drive chain trained between the third and fourth sprockets. The exercise bicycle has a reciprocating arm assembly which includes a pair of reciprocating arm levers mounted pivotally on the front end portion of the frame and a pair of crank arms, each of which having a first end connected pivotally to a lower end of a respective one of the arm levers and a second end connected eccentrically to a respective end of the third drive shaft.
REFERENCES:
patent: 2419998 (1947-05-01), Johnson
patent: 4436097 (1984-03-01), Cunningham
patent: 4657244 (1987-04-01), Ross
patent: 4705269 (1987-11-01), DeBoer et al.
patent: 4712789 (1987-12-01), Brilando
patent: 4712790 (1987-12-01), Szymski
patent: 4838544 (1989-06-01), Sasakawa et al.
patent: 4895362 (1990-01-01), Ross
patent: 4902001 (1990-02-01), Balbo
patent: 5035417 (1991-07-01), Ross
Crow Stephen R.
Giant Manufacturing Co. Ltd.
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