Automatic bicycle transmission

Details Automatic bicycle transmission Automatic bicycle transmission

1975-03-31

1976-12-07

Scott, Samuel

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

F16H 5530, F16H 5554

Patent

active

039955087

ABSTRACT:
The drive ratio of a bicycle transmission is automatically varied through a radially contractible drive chain sprocket wheel assembly that is drivingly coupled to a pedal driven, drive ratio control disk. A force transmitting spring couples the control disk to the sprocket wheel assembly. A fluid-dash-pot device dampens angular oscillation of the control disk relative to the wheel assembly and reduces cyclic fluctuations in the drive ratio.

REFERENCES:
patent: 3867851 (1975-02-01), Gregory et al.
patent: 3872736 (1975-03-01), Houvouras

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