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US 4,652,032 AGranted
Vehicle bumper assembly
AssigneeBorg-Warner Chemicals, Inc.
InventorRobert J. Smith
Life of this patent
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AssigneeBorg-Warner Chemicals, Inc.
InventorRobert J. Smith
Estimating the term…
A vehicle bumper assembly is provided which comprises a substantially tubular reinforcing beam, a face cover, and a means for attaching said face cover to said reinforcing beam such that the reinforcing beam includes a material which has a flexural modulus at 72.degree. F., according to ASTM Standard D-790 (0.05 in./min.) of about 100,000 psi to about 500,000 psi and a deflection temperature according to ASTM Standard D-698 (264 psi) 1/4" thick samples of at least 155.degree. F. The present invention also includes a process for making a vehicle bumper assembly comprising the steps of molding a first material to form a face cover; extrusion molding a second material to form a tubular section; blow molding said tubular section to form a substantially tubular reinforcing beam having means adapted for attaching said reinforcing beam to a vehicle; and attaching said face cover to said reinforcing beam.
A vehicle bumper assembly comprising a substantially tubular reinforcing beam having a single substantially continuous wall, a face cover, and means for attaching said face cover to said reinforcing beam, wherein said reinforcing beam has a cross-sectional configuration which varies along the length of said beam, and wherein said beam includes a thermoplastic material which has a flexural modulus at 72.degree. F., according to ASTM Standard D-730 (0.05 in./min.), of about 100,000 psi to about 500,000 psi and a deflection temperature according to ASTM Standard D-698 (268 psi), 1/4" thick samples of at least 155.degree. F.
Dependencies are inferred from the claim text.