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Kikuzo Takamiya, Sadao Mabuchi, Kazuhiro Inoue: Speed change device for bicycle. Bridgestone Cycle, Parkhurst Oliff & Berridge, June 13, 1989: US04838122 (118 worldwide citation)

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 de ...


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Kunitoshi Kozakae: Stepless speed change device for bicycle. Bridgestone Cycle, Parkhurst & Oliff, February 24, 1987: US04644828 (13 worldwide citation)

A stepless speed change device for a bicycle comprises a plurality of planetary members journaled in a carrier fixed to a crankshaft of the bicycle in two parallel planes perpendicular to the crankshaft, planetary gears respectively fitted on the planetary members through one-way clutches so as to r ...


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Takamiya Kikuzo, Mabuchi Sadao, Inoue Kazuhiro: Speed change device for bicycle.. Bridgestone Cycle Co, April 6, 1988: EP0262841-A2 (4 worldwide citation)

A speed change device for a bicycle comprises a carrier jointed to a crank arm (8) and a plurality of planet gears (15) rotatably supported on a plurality of shafts (13) arranged in a circle on said carrier. Each of the planet gears (15) includes a plurality of planet gear elements (15a,b,c) differe ...


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Dal Pra Giuseppe: Electrically powered actuator for controlling a front or rear bicycle derailleur and a speed change device for bicycle. Campagnolo, June 11, 2003: TW536504 (1 worldwide citation)

Electrically powered actuator, particularly for controlling a bicycle component, for example a front or rear bicycle derailleur, comprising an electrical motor (2) with an output shaft (3), a driven shaft (11) rotationally mounted in the casing (10) of the actuator (1) and connected to the output sh ...


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Jung Chai Hsieh: Automatic speed change device for bicycle gearbox. Alfa Power, Leong C Lei, May 2, 2006: US07036836

A structure of an automatic speed change device for bicycle gearbox is disclosed in this present invention. The above-mentioned design can be applied to a bicycle with a rear wheel speed change device. According to this invention, the automatic speed change device is able to control the allotting de ...


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Koshima Akira: Front speed-change device for bicycle. Shimano, LI SHUMING, October 22, 1996: CN95117600

A front derailleur includes a base member for connecting to a bicycle frame, a first link pivotably connected to the base member at a first base member connection location, and a second link pivotably connected to the base member at a second base member connection location. An inner chain guide is p ...


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