REINFORCED BICYCLE FRAME
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Jan 18, 2012
filing date -
Jan 18, 2012
priority date (Note) -
Abandoned
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Abstract
A reinforced bicycle frame is made from a fiber-reinforced material. The reinforced bicycle frame includes a bottom bracket shell, a seat tube upwardly extending from the bottom bracket shell, a down tube forwardly extending from the bottom bracket shell, two chain stays backwardly and respectively extending from the bottom bracket shell, and a rib. The bottom bracket shell has a periphery wall defining a chamber and having two opposite lateral sides, each of which is provided with a round tube portion. The rib extends toward the round tube portions from one of a first junction between the seat tube and the down tube and a second junction between the seat tube and the chain stays so as to enhance the structural rigidity of the bottom bracket shell.
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