Derailleur for bicycles and similar vehicles

Details Derailleur for bicycles and similar vehicles Derailleur for bicycles and similar vehicles

1978-05-15

1980-04-22

Braun, Leslie

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

280238, F16H 900, F16H 1100

Patent

active

041988744

ABSTRACT:
A derailleur serves to change the speed of a chain driven vehicle by moving a change-over frame having a tension and a guide pulley, the change-over frame being formed of a single plate and provided with a chain holder positioning radially outwardly of the guide pulley and keeping engagement of a driving chain therewith. Interaction between the change over frame and chain during the shifting of speed is substantially reduced. Chain position is maintained by means of a chain holder reducing chain interference with the change over frame. The chain may be removed with a minimum effort without special tools.

REFERENCES:
patent: 3927904 (1975-12-01), Bergles
patent: 3960025 (1976-06-01), Juy
patent: 3964330 (1976-06-01), Ozaki
patent: 3994167 (1976-11-01), Juy
patent: 4030375 (1977-06-01), Nagano
patent: 4061048 (1977-12-01), Huret et al.

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