Eccentric device for gear set of bicycle

Details Eccentric device for gear set of bicycle Eccentric device for gear set of bicycle

1997-11-14

2000-02-15

Oberleitner, Robert J.

Land vehicles

Wheeled

Occupant propelled type

B62M 100

Patent

active

060243678

ABSTRACT:
An eccentric device of a gear set of a bicycle is described. The device includes a braking disk, a transmission gears set, an eccentric shaft set and a hub assembly. The eccentric shaft set is disposed within the hub assembly and can be rotated with respect to the hub assembly. When the eccentric shaft is located at the center of the hub assembly the hub assembly can be readily rotated by the flywheel. When the braking disk is braked, the eccentric shafts set can be rotated with respect to the hub assembly through the transmission gears set. The shifting effect is thereby attained. The shifting displacement can be readily controlled by the braking time of the braking disk. When the braking disk is released the hub assembly can be readily rotated as centered on the eccentric shafts. The rear wheel will be oscillated upward and downward when it is rotated.

REFERENCES:
patent: 3831977 (1974-08-01), Osborne et al.
patent: 4162084 (1979-07-01), Mikina
patent: 4755005 (1988-07-01), Tsai

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