Inboard derailleur for multispeed bicycles

Details Inboard derailleur for multispeed bicycles Inboard derailleur for multispeed bicycles

1975-11-10

1977-05-17

Gerin, Leonard H.

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

280238, 280261, F16H 900, F16H 1100, B62M 900, B62M 102

Patent

active

040234240

ABSTRACT:
The derailleur is mounted inboard as respects the bicycle frame. It is aligned with the rear drive sprockets. The take-up cage carrying sprocket wheels over which the slack part of the chain passes is carried on an actuating rod or stem, which engages a positioning means which provides for positive transfer of the chain from one drive sprocket to another, and for positive alignment of the take-up means and drive chain with individual drive sprockets. The positioning means is in the form of overlying plates, having overlying slots configurated to positively guide the stem carrying the take-up cage to assure the positive transfer of the drive chain, and positive alignment with individual drive sprockets.

REFERENCES:
patent: 3803933 (1974-04-01), Huret et al.

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