INSERT FOR BICYCLE CRANK ARM
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United States of America Patent
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Issued Date -
Nov 4, 2010
app pub date -
Apr 29, 2009
filing date -
Apr 29, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A crank arm is provided, having a body made of a composite material, the body defining two apertures, each aperture defining a plurality of recesses. Each of the recesses extends outwardly a distance from a center of the corresponding aperture and widens as the distance increases. Inserts made of a material surrounding the inside edge of each aperture, and each insert has extensions fitting within a corresponding recess. When the crank arm is cooled, the material shrinks relative to the body, and the recesses maintain the insert in position during the cooling process.
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