Bumper
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United States of America Patent
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Jul 8, 2014
Grant Date -
Mar 6, 2014
app pub date -
Aug 27, 2013
filing date -
Aug 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Providing a bumper absorbing large amount of impact energy with respect to both a light collision and a heavy collision, and preventing the reinforcement beam from bending and protruding backward at a portion where an obstacle collides and from displacing backward in this protruding state. Provided is a bumper for vehicles including a reinforcement beam made of metal and a pair of support members having a hollow cross section, protruding from a vehicle frame, and supporting the reinforcement beam therebetween. A quenched region is provide over a portion including a middle of the reinforcement beam. Unquenched portions are provided on the pair of connecting portions or a pair of adjacent portions inside the pair of connecting portions.
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