Multiple-speed hub

Details Multiple-speed hub Multiple-speed hub

1975-05-15

1976-12-07

Scott, Samuel

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

F16H 344

Patent

active

039955036

ABSTRACT:
The transmission ratio of a multiple-speed hub for a bicycle or like vehicle may be changed by axially shifting the ring gear of a planetary gear transmission in the hub shell against the restraint of a return spring. A pawl on the ring gear and/or ratchet teeth on the hub shell have cooperating engagement faces which are obliquely inclined relative to the hub axis in such a manner that the driving force transmitted by the pawl to the ring gear has an axial component in the direction of the return spring action, thereby further axially securing the ring gear in at least one speed position of the hub, minimizing avoidable clearances, and reducing wear of the gear elements.

REFERENCES:
patent: 2327740 (1943-08-01), Pfister
patent: 2844050 (1958-07-01), Brendel
patent: 3299745 (1967-01-01), Toplis
patent: 3432013 (1969-03-01), Matsumoto
patent: 3828627 (1974-08-01), Schwerdhofer

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