One-piece frame for a bicycle
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United States of America Patent
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Issued Date -
May 1, 2008
app pub date -
Oct 26, 2006
filing date -
Oct 26, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A one-piece frame for a bicycle has more than two hollow metal tubes connecting to each other by welding to form an initial frame. The initial frame is put into a mold. With the hydraulic pressure process, the metal tubes and the welding parts between the metal tubes are expanded to form the one-piece frame. Therefore, the strength of the one-piece frame is enhanced. Furthermore, multiple protruding patterns are formed on an outside surface of the one-piece frame to enhance the strength and aesthetics.
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