Apparatus for changing rotation of pedal shaft for bicycle

Details Apparatus for changing rotation of pedal shaft for bicycle Apparatus for changing rotation of pedal shaft for bicycle

1998-06-09

1999-09-28

Marmor, Charles A

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Ratio shift initiated by reverse rotation of input shaft

475297, 475324, 475 12, 748101, 280236, F16H 344, B62M 1114

Patent

active

059578025

ABSTRACT:
An apparatus for changing rotation of a pedal shaft for a bicycle is provided, in which forward and rearward driving forces of the pedal shaft are convertible without a load, by indirect coupling, and the bicycle can be pulled rearward under the setting conditions for forward traveling. The apparatus includes: a sprocket housing installed to be freely rotatable centering the pedal shaft, to which a ring gear and a ratchet changing ring having the first one-way stoppers are fixed; a sun gear installed to be integrally rotatable with the pedal shaft; rearward rotation of the carrier can be checked by the first one-way stoppers of the ratchet changing ring; a changing gear ring coupled with the carrier to be elastically rotatable along the circumference with predetermined rotatable angle; a fixing housing having the second one-way stoppers capable of stopping rearward rotation of the carrier; and a stopper changing ring capable of controlling the second one-way stoppers of the fixing housing.

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patent: 5435583 (1995-07-01), Foster, Jr.
patent: 5647817 (1997-07-01), Chang

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