Bicycle shift mechanism

Details Bicycle shift mechanism Bicycle shift mechanism

1974-09-23

1976-08-03

Wyche, Benjamin W.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

74501R, 74534, 74535, 280236, G05G 900, B23P 700, F16C 110, G05G 100

Patent

active

039722473

ABSTRACT:
A control mechanism adapted for incrementally and positively controlling the displacement of a biassed member or the like associated with a bicycle gear-change transmission between a plurality of predetermined positions for effectuating changes in gear ratios of such transmission in response to unidirectional movement of an operator control lever of the control mechanism. In addition, the control mechanism is also, preferably, provided with an "overshift" arrangement which effectively and effortlessly enables an operator to shift the bicycle sprocket chain from one sprocket to another sprocket of larger diameter. In an alternate embodiment, the control mechanism is directly mounted on and connected to a derailleur type bicycle change-gear mechanism.

REFERENCES:
patent: 2785586 (1957-03-01), Schwerdhofer
patent: 3104559 (1963-09-01), Dotter
patent: 3332295 (1967-07-01), Cummings et al.
patent: 3442148 (1969-05-01), Jay
patent: 3499346 (1970-03-01), Ishida et al.
patent: 3580104 (1971-05-01), Yashiro
patent: 3701546 (1972-10-01), Schwerdhofer et al.
patent: 3742580 (1973-07-01), Sullivan, Jr.

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