Electronically controlled speed change device for bicycles

Details Electronically controlled speed change device for bicycles Electronically controlled speed change device for bicycles

1996-02-13

1999-02-02

Boehler, Anne Marie

Land vehicles

Wheeled

Occupant propelled type

280261, 474 70, 474 78, 474110, F16H 6100

Patent

active

058654542

ABSTRACT:
An electronically controlled speed change device for bicycles has an automatic mode of operation in which, at the request of the cyclist for increase or decrease of the speed ratio, the system itself automatically provides to select the pair front crown wheel-rear sprocket which is most suitable to provide a progressive increase, or respectively a decrease, of the distance covered by the bicycle at each turn of the pedals.

REFERENCES:
patent: 3919891 (1975-11-01), Stuhlmuller
patent: 4490127 (1984-12-01), Matsumoto
patent: 4605240 (1986-08-01), Clem et al.
patent: 4946425 (1990-08-01), Buhlmann
patent: 5213548 (1993-05-01), Colbert
patent: 5356348 (1994-10-01), Bellio
patent: 5480356 (1996-01-01), Campagnolo
patent: 5551315 (1996-09-01), Piloulas
patent: 5571056 (1996-11-01), Gilbert

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