Bicycle hub speed-change assembly

Details Bicycle hub speed-change assembly Bicycle hub speed-change assembly

2006-06-07

2008-11-11

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural drive ratios other than unity

Reexamination Certificate

active

07448979

ABSTRACT:
The present invention discloses a bicycle hub speed-change assembly having a planetary gear set disposed therein, a speed-change gear wheel separately disposed on both left and right sides of the planetary gear set, and a first ratchet jacket and a second ratchet jacket respectively disposed on the external side of the speed-change gear wheels, such that control ratchets of the first ratchet jacket and second ratchet jacket are selectively hidden or driven by an external ring of the planetary gear set to couple the first ratchet jacket with a hub, so as to provide three different speeds and the invention features the advantages of stable speed, simplified components, and light weight.

REFERENCES:
patent: 2816634 (1957-12-01), Brown
patent: 2844050 (1958-07-01), Brendel
patent: 3186259 (1965-06-01), La Brie
patent: 5964679 (1999-10-01), Matsuo et al.
patent: 6468178 (2002-10-01), Mohtasham
patent: 6607465 (2003-08-01), Shoge

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