Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural drive ratios other than unity
Reexamination Certificate
2011-05-03
2011-05-03
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
Reexamination Certificate
active
07935019
ABSTRACT:
A bicycle hub transmission basically includes a hub axle, a driver, a hub shell, a planetary gear mechanism and a clutch. The driver is rotatably supported relative to the hub axle. The hub shell is rotatably supported relative to the driver. The planetary gear mechanism is disposed between the driver and the hub shell for communicating rotational power from the driver to the hub shell through a plurality of power transmission paths. The clutch is arranged for actuating the planetary gear mechanism to select a different gear. The clutch includes at least one clutch plate which is non-rotatably supported by the hub axle and axially movable relative to the hub axle to selectively engage with and disengage from at least one sun gear of the planetary gear mechanism.
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Global IP Counselors, LLP
Pang Roger
Shimano Inc.
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