Front frame for a bicycle
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United States of America Patent
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Jul 21, 2009
Grant Date -
Jan 24, 2008
app pub date -
Oct 4, 2006
filing date -
Jul 24, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A front frame for a bicycle includes an upper tube, a lower tube and a head tube all of which are made of fiber reinforced material. The head tube extends integrally from a front end of the upper tube and a front end of the lower tube. The head tube has a chamber communicates with a chamber of the upper tube and a chamber of the lower tube. Two inner tubes are provided in the chamber of the upper tube. The abutted portions of the two inner tubes form a rib such that the structure strength of the upper tube is improved.
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