Freewheel hub for bicycles
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United States of America Patent
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-
Apr 14, 1998
Grant Date -
N/A
app pub date -
May 22, 1996
filing date -
May 22, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A freewheel hub for bicycles to provide propulsion by means of a plurality of sprockets when a derailleur is used. A sprocket or gear carrier transmits the rotational forces introduced to the sprockets mounted on the sprocket carrier by means of a drive sleeve, a ratchet and a pawl carrier to a hub sleeve in the direction of rotation of the drive, whereby the ratchet represents a freewheel in the opposite direction of rotation. The propulsion unit, which consists of the sprocket carrier and the drive sleeve, is divided into two parts, and can therefore be manufactured easily with regard to its driving gearings and pawl gearing.
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