Bicycle hub transmission

Details Bicycle hub transmission Bicycle hub transmission

2008-04-15

2011-11-08

Pang, Roger (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural drive ratios other than unity

C475S270000, C475S294000, C475S012000

Reexamination Certificate

active

08052568

ABSTRACT:
A bicycle hub transmission includes a hub axle, a driver, a hub shell, a power transmission mechanism and a shift mechanism. The driver and the hub shell are rotatably supported relative to the hub axle. The power transmission mechanism is disposed between the driver and the hub shell to selectively transmit rotational power from the driver to the hub shell through one a plurality of power transmission paths. The shift mechanism operatively couples the power transmission mechanism to select a power transmission path. The downstream planetary gear unit includes a planetary gear carrier that meshes with planetary gears of the upstream planetary gear unit or with a linking member coupled to the planetary gears of the upstream planetary gear unit. The planetary gear carrier of the downstream planetary gear unit is coupled with a brake unit to transmit a reverse rotational power from the driver to the brake unit.

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English translation of DE19745419A, May 10, 2011, http://translationgateway.epo.org.

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