Bicycle crank
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United States of America Patent
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N/A
Issued Date -
Jan 20, 2011
app pub date -
Oct 9, 2009
filing date -
Jul 17, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A bicycle crank comprises an L-type left crank and an L-type right crank. The L-type left/right cranks are respectively and integrally composed of a crank and a connection head, and includes a through hole passing through the crank and the connection head, a left compression shaft and a right compression shaft respectively disposed to terminals of the through holes of the L-type left/right cranks, a cone shaped member in which two ends are respectively disposed in the left and right compression shafts and the inner surface has screw threads, a rotary sleeve that is a hollow and integrally formed, and two locking members in which a terminal has screw threads corresponding to the cone shaped member and for respectively passing through the through holes and locked to two ends of the cone shaped member to connect the L-type left crank and the L-type right crank.
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