Undertaking
Patent
1989-04-26
1990-09-25
Crow, Stephen R.
Undertaking
434 61, A63B 2100
Patent
active
049588311
ABSTRACT:
The disclosed stationary exercise bicycle apparatus has a bike unit, a road device unit, and a motion coordinator coupling said bike unit relative to the road device unit. The bike unit has a single wheel supported on and vertically over a non-powered substantially free-wheeling rotatable member of the road unit, and is frictionally coupled to roll on this rotatable member; and the motion coordinator pivots the bike unit frame relative to the road device at a location rearwardly spaced both from the bike unit seat and from the contact region between the wheel and rotatable member. The wheel thus transmits a force against the rotatable member that is related to the rider's weight and to the moment arm distances between the pivot mounting, seat and the contact region, making the degree of difficulty in manually pedaling the wheel automatically responsive to the rider's weight; and whereby the wheel rolling against the rotatable member transmits feedback vibrations to the seat. The pivot mounting may have alternative operative positions to change the moment arm distances for selectively increasing or decreasing the wheel force against the rotatable member. The seat may be adjusted to be forwardly of the contact region from the pivot mounting, thereby providing magnified wheel forces against the rotatable member greater than the rider's weight.
REFERENCES:
patent: 2623302 (1952-12-01), Shields
patent: 3432164 (1969-03-01), Deeks
patent: 4212480 (1980-07-01), Mikina et al.
patent: 4441705 (1984-04-01), Brown
patent: 4580983 (1986-04-01), Cassini et al.
patent: 4743012 (1988-05-01), Kim
Crow Stephen R.
Lind Charles F.
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