METHOD FOR PRODUCING TWIN TANK RAILS FOR TWO-WHEELED VEHICLE
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United States of America Patent
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Issued Date -
Dec 24, 2009
app pub date -
Apr 27, 2009
filing date -
Jun 20, 2008
priority date (Note) -
Abandoned
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Abstract
A method for producing light-weight twin tank rails of a two-wheeled vehicle including bending a rear portion of each of a pair of tubular rails downward using a roll bending machine to form a pair of primarily bent tubular rails. Each of the primarily bent tubular rails is bent using a press molding machine at its front portion to form a pair of secondarily bent tubular rails. Then, a pressurized liquid is fed into each of the second secondarily bent tubular rails while maintaining the secondarily bent tubular rail in the mold cavity of the press molding machine to plastically deform the peripheral wall thereof into conformity with the mold cavity of the corresponding press molding machine.
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