BICYCLE DRIVE ASSEMBLY
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United States of America Patent
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N/A
Issued Date -
Oct 31, 2013
app pub date -
Jun 15, 2012
filing date -
Apr 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A bicycle drive assembly includes a spindle installed in a bicycle, a first crank arm and a second crank arm respectively mounted at two distal ends of the spindle, the first crank arm being rotatable on the axis of the spindle in a first direction of rotation to drive the bicycle forwards, the first crank arm being fastened to the spindle by a screw joint in a second direction of rotation that is the same direction of the first direction of rotation to ensure tight connection between the first crank arm and the spindle when the user is riding the bicycle to pedal the first crank arm.
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