Eccentrically operated speed-variating means with broadened spee

Details Eccentrically operated speed-variating means with broadened spee Eccentrically operated speed-variating means with broadened spee

1992-08-10

1993-06-29

Bui, Thuy M.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

474 72, F16H 5530

Patent

active

052229165

ABSTRACT:
A speed-variating means especially for a bike includes an eccentric wheel rotatably driven by a dringing wheel such as a chain wheel of a bike, the eccentric wheel having its first side portion coupled with a rotating disk rotatably mounted on an axle and connected with a hub and an output wheel such as a bike rear wheel and having a second side portion of the eccentric wheel rotatably held in a stationary disk secured to a retaining bowl fixed on the axle of the output wheel, and a variable speed adjusting device operatively moving the eccentric wheel to cling a center of the eccentric wheel with an axis of the axle, or eccentrically moving the eccentric wheel to and from the axis, so that a broader speed variation ratio can be effected by comparing a smaller eccentric radius of the eccentric wheel (wheel center) about the axle axis with a larger eccentric radius of the eccentric wheel about the axle axis.

REFERENCES:
patent: 2958239 (1960-11-01), Bernier
patent: 4299581 (1981-11-01), Korosue
patent: 5127883 (1992-07-01), Wen

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