Internally accommodated speed change mechanism applicable to a b

Details Internally accommodated speed change mechanism applicable to a b Internally accommodated speed change mechanism applicable to a b

1975-04-10

1977-10-11

Scott, Samuel

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

F16H 344

Patent

active

040529142

ABSTRACT:
The present invention relates to an internally accommodated three-stage speed change mechanism and an internally accommodated five-stage speed mechanism applicable to a bicycle, in which inside a hub body incorporating a portion of a speed change mechanism a first planetary gear mechanism is accommodated and a first speed changing rod is provided for controlling the first planetary gear mechanism, the ring gear of which is slidably moved by first the speed changing rod and the planetary gear of which remains axially fixed regardless of the first speed change rod.
Further, a second planetary gear mechanism is assembled additionally to the aforesaid planetary gear mechanism and a second speed changing rod controlling the revolution and torque transmitting process of a sun gear of the second planetary gear mechanism is provided.

REFERENCES:
patent: 3886811 (1975-06-01), Hillyer
patent: 3908807 (1975-09-01), Ozaki
patent: 3934493 (1976-01-01), Hillyer

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