Bicycle crank assembly
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United States of America Patent
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Sep 26, 2017
Grant Date -
Apr 11, 2013
app pub date -
Oct 5, 2011
filing date -
Oct 5, 2011
priority date (Note) -
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Abstract
A bicycle crank assembly is provided with a first sprocket, a second sprocket, a crank arm, a sprocket fixing structure and an alignment tube. The first sprocket includes a plurality of first teeth and at least one first mounting portion having a first mounting opening. The second sprocket includes a plurality of second teeth and at least one second mounting portion having a second mounting opening. The crank arm includes at least one sprocket attachment portion having a third mounting opening. The sprocket fixing structure secures the first and second sprockets to the crank arm via the first, second and third mounting openings. The alignment tube extends through at least two of the first, second and third mounting openings.
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