Impact bar and its manufacturing method
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United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Dec 23, 1998
filing date -
Sep 24, 1997
priority date (Note) -
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Abstract
An impact bar having a sectional shape including a cylindrical portion formed of a plate material has a flat rib portion formed by extending both ends of the plate material to an inner side of the cylindrical portion with the leading end of each end being close to or contacting the inner surface of the cylindrical portion. The resulting impact bar provides enhanced strength without an increase in weight.
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