Derailleur for a bicycle

Details Derailleur for a bicycle Derailleur for a bicycle

1975-03-13

1976-08-17

Scott, Samuel

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

74242, 280236, 74501R, 74531, F16H 722, F16H 700

Patent

active

039747077

ABSTRACT:
A derailleur for a bicycle, which comprises four members, including a fitting member, two linkage members and a movable member, all movable with respect to each other. Between two of the members there is a device for positioning cages having chain-guide pulleys mounted on the movable member, whereby the derailleur enables the cages to be properly positioned and kept in the position at each speed-change stage of the bicycle so that an accurate and light speed-change operation may be performed.

REFERENCES:
patent: 3362238 (1968-01-01), Hayashi et al.
patent: 3453899 (1969-07-01), Tarutani et al.

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