Plastic energy management beam

Abstract

An energy-absorbing system includes a tube made of a continuous polymeric material.The tube has first and second tube sections connected by an intermediate tubesection. By this arrangement, upon the bumper system receiving a longitudinalimpact, the first and second tube sections telescopingly collapse with a predictableand consistent rolling collapse.

Description

[0001] Cross-references in relation to applications [0002] This application claims the benefit of US Provisional Application No. 60 / 607,677, filed September 7, 2004, entitled "Energy Control Beams Made of Plastic," which is incorporated herein by reference in its entirety. [0003] The above application is a continuation-in-part of U.S. Application Serial No. 10 / 997,332, entitled "Tubular Energy Control System for Absorbing Impact Energy," which is a continuation-in-part of U.S. Application Serial No. 10 / 997,332, entitled "Tubular Energy Control System for Absorbing Impact Energy Control System", a continuation of U.S. Application No. 10 / 648,757, filed August 26, 2003, which is a continuation of U.S. Application No. 09 / 964,914, filed September 27, 2001, now titled " Extruded Struts with Different Strength Rings" are continuations-in-part of US Patent No. 6,648,384, the entire contents of which applications are incorporated herein by reference. This application is also a cont...

AI Technical Summary

Problems solved by technology

Those of ordinary skill in the art of bumper manufacturing know that the concept of extruded struts purely from higher strength materials is often a bad idea and, in fact, often leads to failure of the bumper system as large impact loads and peak loads are transmitted into the frame, and also creates problems related to insufficient energy absorption

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