Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Ratio shift initiated by reverse rotation of input shaft
Patent
1997-05-08
1999-08-17
Bonck, Rodney H.
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Ratio shift initiated by reverse rotation of input shaft
1922174, 475298, F16H 344
Patent
active
059385600
ABSTRACT:
A bicycle multi-gear hub with a coaster brake includes a hub body, a driver, a planetary gear arrangement and a coaster brake mechanism. The braking effect of the coaster brake mechanism is always boosted in all possible gears by the planetary gear arrangement when the driver is back-pedalled in a braking direction. The planetary gear arrangement can be shifted, if necessary, to always apply braking torque through a ring gear of the planetary gear arrangement, so that the planetary gear arrangement can be in the lowest gear of the multi-gear hub during braking. To shift the planetary gear arrangement into the lowest gear for braking when the planet carrier is connected to the driver for overdrive, a clutch member can be deflected by the planet carrier to disengage the driver from the planet carrier and engage the driver with the ring gear. The portion of the clutch member that engages the planet carrier can be configured independently of the portion of the clutch member that engages the ring gear.
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patent: 4973297 (1990-11-01), Bergles
Bonck Rodney H.
Fichtel & Sachs AG
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