Derailleur arrangement, in particular for bicycles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 2, 1996
Grant Date -
N/A
app pub date -
Sep 12, 1994
filing date -
Sep 13, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
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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