Shifting arrangement for a change gear drive in multispeed hubs for bicycles
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United States of America Patent
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-
Sep 17, 1996
Grant Date -
N/A
app pub date -
Apr 28, 1995
filing date -
Apr 30, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shifting arrangement for change gear drives in multispeed hubs for bicycles has a plurality of control planes coaxially disposed relative to one another, within which, by cam control, trip cam rods, which are installed on the surface of the hub axle coaxially thereto, are swivellable around its axis, and which have a first and a second profile, whereby the possibility emerges of engaging and disengaging arbitrarily many couplings disposed one after the other on the hub axle. The shifting arrangement further offers by its design the advantage of controlling pawl couplings, which are disposed on a larger diameter in the change gear drive of the hub, simultaneously and in coordination with the cam control of the sun gears.
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