Derailleur arrangement, in particular for bicycles

Details Derailleur arrangement, in particular for bicycles Derailleur arrangement, in particular for bicycles

1994-09-12

1996-04-02

Buiz, Michael Powell

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

474160, F16H 700

Patent

active

055035981

ABSTRACT:
A derailleur with at least two sprockets (A, C) on a sprocket unit (A-C) is designed so that the chain (B) can be shifted up and down more easily between a smaller sprocket (C) and a larger sprocket (A). For this purpose, there is a double tooth space (ZA) on at least the larger sprocket (A), which forms a channel for the transfer of the chain between the two sprockets. By means of a link support plate (16) of the larger sprocket (A), a path (B1, B2. B3, B4, B5) which is curved or bent radially outwardly convexly--seen in the axial direction--of a chain transfer segment is achieved, which is formed during the transfer of the chain from the smaller sprocket (C) to the larger sprocket (A) in the vicinity of the double tooth space (ZA).

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