Energy management beam
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United States of America Patent
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-
Feb 28, 2012
Grant Date -
Aug 16, 2007
app pub date -
Dec 18, 2006
filing date -
Sep 27, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tube comprising an outer tube section with a stepped outer surface and an inner tube section, with the inner tube section being located within the outer tube section. The tube also comprises a spanning section connecting an end of the outer tube section to an end of the inner tube section. The outer tube section is longer than the inner tube section, whereby, upon undergoing a longitudinal impact, the outer tube section crushes predictably and sooner than the inner tube section upon the energy management tube receiving forces from the longitudinal impact, to thereby create a first energy absorption level during crushing of the outer tube section alone and a second energy absorption level during crushing of the outer tube section and the inner tube section.
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