Composite motor vehicle bumper beam
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United States of America Patent
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-
Sep 8, 1998
Issued Date -
N/A
app pub date -
Apr 10, 1996
filing date -
May 20, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A structural reaction injection molded motor vehicle bumper beam comprises a preform formed of layers of interlaced glass fibers and chopped glass fibers wherein most of the interlaced fibers are oriented longitudinally of the bumper beam. A two-component, non-filled reaction injection molding polymeric/pure polyurethane based resin with a neat elongation in excess of about 50% bonds the fiberglass layers together in a composite bumper beam structure wherein the fiberglass provides substantial strength and stiffness and the highly compliant resin allows extensive beam deflection without catastrophic cracking to enable the bumper beam without other assistance to absorb sufficient energy in repeated impacts to meet in-service requirements.
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Family
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Cited Art Landscape
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