ROTARY UNIT FOR BICYCLE HUB ASSEMBLY
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United States of America Patent
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-
N/A
Issued Date -
Sep 15, 2011
app pub date -
Mar 10, 2010
filing date -
Mar 10, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A hub assembly includes a hub and a driving tube is connected to one end of the hub, the driving tube includes a connection end and a sprocket portion located on two ends thereof. The connection portion is inserted into the hub and the sprocket portion has a reception hole defined in an end thereof. An axle extends through the hub and the driving tube. A rotary unit is located between the reception hole and the axle, and includes a tubular member which is mounted to the axle and includes a stop flange. At least one space is defined between the tubular member, the stop flange and an inner periphery of the reception hole. At least one self-lubricating bearing is located in the space and two sides of the self-lubricating bearing are well positioned by the stop flange and the locking unit.
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