UPPER FRAME OF FRONT FORK FOR BICYCLE
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Apr 22, 2008
filing date -
Dec 25, 2007
priority date (Note) -
Abandoned
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Abstract
An upper frame of a front fork for a bicycle includes an upright tube and two branch tubes. The upright tube has an axial rib. The two branch tubes extend bilaterally from a bottom end of the upright tube and each have an axial rib parallel substantially to a longitudinal direction of the upright tube and a connecting portion located at an end of the branch tube for connection of a fork tube. Thus, the structure strength of the upright tube can be enhanced by the axial rib thereof, and the structure strength of the branch tubes can be enhanced by the axial ribs thereof to bear stress generated from the fork tubes.
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