Pedal-actuated bicycle gear shift means

Details Pedal-actuated bicycle gear shift means Pedal-actuated bicycle gear shift means

1978-12-14

1981-10-06

Husar, C. J.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

745944, 745946, 280236, F16H 722, B62M 900

Patent

active

RE0307580

ABSTRACT:
In bicycles having multi-speed gear arrangements, the automatic shifting of the sprocket chain controlling the gears is in response to foot pedal pressures and is effected by fluid or electrical connections from the pedals to the [gear-changing] chain-shifting mechanism, thereby to impart full foot control to shifting with resultant improved pedaling cadence and bicycling comfort.

REFERENCES:
patent: 2024499 (1935-12-01), Baron
patent: 2435928 (1948-02-01), Matulich
patent: 3402942 (1968-09-01), Shimano et al.
patent: 3613466 (1971-10-01), Houghton
patent: 3732787 (1973-05-01), Yamaguchi
patent: 3742777 (1973-07-01), Mathauser
patent: 3830521 (1974-08-01), Gardel et al.
patent: 3873128 (1975-03-01), Dunder et al.
patent: 3919896 (1975-11-01), Foster

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