Bicycle chain drive assembly

Details Bicycle chain drive assembly Bicycle chain drive assembly

1993-06-28

1995-06-27

Marmor, Charles A.

Machine element or mechanism

Elements

Cranks and pedals

192 64, 474160, F16D 4130, F16H 706

Patent

active

054269970

ABSTRACT:
A drive assembly is provided for a multi-speed pedal drive bicycle that allows the bicycle's gears to be shifted even when the pedals are not being trod upon. This advance in multi-speed bicycles is accomplished through a new front chain ring that is capable of freewheeling with respect to a crank axle in combination with the employment of a friction plate between the rear wheel hub and the rear freewheel cassette allowing 1:1 transmission of the rotation of the rear wheel to the rear freewheel cassette which continuously moves the chain of the bicycle provided the bicycle is moving.

REFERENCES:
patent: 3386544 (1968-06-01), Matsuda
patent: 3492883 (1970-02-01), Maeda
patent: 4145095 (1979-03-01), Segawa
patent: 4150859 (1979-04-01), Segawa et al.
patent: 4154123 (1979-05-01), Nagano
patent: 4154327 (1979-05-01), Haeussinger
patent: 4183262 (1980-01-01), Segawa
patent: 4259880 (1981-04-01), Ueno
patent: 4625580 (1986-12-01), Burt
patent: 4650049 (1987-03-01), Stephens
patent: 4840084 (1989-06-01), Durham

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