04838122 is referenced by 118 patents and cites 18 patents.

A speed change device for a bicycle comprises a carrier jointed to a crank arm and a plurality of planet gears rotatably supported on a plurality of shafts arranged in a circle on said carrier. Each of the planet gears includes a plurality of planet gear elements different in number of teeth. The device further comprises an internal gear in mesh with ones of the planet gear elements of the planet gears and formed in an outer circumference with a sprocket to form a driven rotary body, one-way clutches for connecting the driven rotary body to the carrier, a plurality of sun gears provided on a crankshaft and in mesh with the planet gear elements of the planet gears, respectively, and one-way clutches provided between inner circumferences of the sun gears and a fixed bearing enclosing the crankshaft. One of the one-way clutches last mentioned is able to connect selectively.

Title
Speed change device for bicycle
Application Number
7/95851
Publication Number
4838122
Application Date
September 14, 1987
Publication Date
June 13, 1989
Inventor
Kazuhiro Inoue
Ageo
JP
Sadao Mabuchi
Ageo
JP
Kikuzo Takamiya
Kitamoto
JP
Agent
Parkhurst Oliff & Berridge
Assignee
Bridgestone Cycle
JP
IPC
F16D 23/00
F16D 13/04
F16H 57/10
F16H 3/44
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