Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1980-09-25
1983-08-30
Braun, Leslie A.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
192 6A, 192 4892, F16H 344
Patent
active
044009992
ABSTRACT:
A drive hub for a bicycle includes an axially extending hub shaft with a driver rotatably mounted on the hub shaft. A plurality of sprockets are secured to the driver in side-by-side relation. A hub sleeve laterally encloses and extends in the axial direction of the hub shaft. At one end the hub sleeve is supported on the driver and at the other end it is supported on the hub shaft. A planetary gear system encircles the hub shaft and is enclosed by the hub sleeve driver. The planetary gear system is arranged to transmit the driving force from the driver to the hub sleeve and includes a sun gear fixed on the hub shaft, a planetary gear carrier rotatably mounted on the hub shaft and an annular gear with internal gear teeth formed as an integral part of the driver. A shifting device moves a coupling member for selectively coupling the hub sleeve with one of the annular gear or a planet gear mounted on the planet gear carrier.
REFERENCES:
patent: 3135368 (1964-06-01), Shimano
patent: 3648809 (1972-03-01), Schwerdhofer
patent: 4069725 (1978-01-01), Segawa
patent: 4147243 (1979-04-01), Segawa et al.
patent: 4276973 (1981-07-01), Fukui
patent: 4294138 (1981-10-01), Fukui
Braun Leslie A.
Fichtel & Sachs AG
Gotts Lawrence J.
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