Speed control apparatus for a bicycle

Details Speed control apparatus for a bicycle Speed control apparatus for a bicycle

1990-04-11

1992-03-17

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

745022, 74489, G05G 1300, F16C 100

Patent

active

050957686

ABSTRACT:
A bicycle speed control apparatus according to this invention comprises a wind-up control device including a take-up element for winding a speed control cable, and a position maintaining mechanism for maintaining the take-up element in position. The control device is operable to effect change speed by rotating the take-up element for winding the cable.
The present invention is characterized in that the position maintaining mechanism is operable to maintain the take-up element in a plurality of change speed positions and in overshift positions displaced from the change speed positions in a cable winding direction, respectively. The invention further provides a position maintenance canceling device operable to release the take-up element maintained in position by the position maintaining mechanism, and to limit an amount of rotation of the take-up element in the rewinding direction to one change speed position when the take-up element has been maintained in one overshift position associated therewith, and to a different change speed position in the rewinding direction when the take-up element has been maintained in one change speed position.

REFERENCES:
patent: 2854852 (1958-10-01), Clark
patent: 3943794 (1976-03-01), Shimada
patent: 3972247 (1976-08-01), Armstrong
patent: 4232564 (1980-11-01), Yamasaki
patent: 4343201 (1982-08-01), Shimano
patent: 4532825 (1985-08-01), Nagano
patent: 4751852 (1988-06-01), Nagano
patent: 4864885 (1989-10-01), Nagano
patent: 4885951 (1989-12-01), Desenclos et al.

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