BICYCLE DRIVE CHAINWHEEL ASSEMBLY
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United States of America Patent
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Issued Date -
May 14, 2015
app pub date -
Nov 8, 2013
filing date -
Nov 8, 2013
priority date (Note) -
Abandoned
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Abstract
A bicycle drive chainwheel assembly mounted on a ratchet seat annularly provided with a flange peripherally at one end is disclosed, which includes a sleeve, at least one first chainwheel, at least one second chainwheel, at least one first washer, and a stopper. The sleeve has a first end being provided with a retaining wall stopped by the flange at one end of the ratchet seat, and a second end being provided with a first engagement portion and a second engagement portion having different outer diameters; the first chainwheel and the second chainwheel are respectively sleeved on the first engagement portion and the second engagement portion, a first washer is disposed between the first chainwheel and the second chainwheel, and a stopper is disposed on the other end of the ratchet seat.
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