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Energy absorbing system for conflicting regulatory requirements for vehicle bumpers

  • US 10,005,408 B2
  • Filed: 11/03/2011
  • Issued: 06/26/2018
  • Est. Priority Date: 11/03/2011
  • Status: Expired due to Fees
First Claim
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1. A multi-stage energy absorbing system comprising:

  • a thermoplastic flanged frame; and

    a crush lobe having a proximal base aligned with the flanged frame and a distal end protruding from the flanged frame, wherein the crush lobe comprises a central slab and slab pairs such that the crush lobe comprises a total of 2i+1 slabs, wherein i is the number of slab pairs and is greater than or equal to 1; and

    wherein the central slab has load walls that extend from the base;

    wherein the slab pairs are disposed on opposite sides of the central slab;

    wherein the slabs are disposed in a stepped arrangement and configured to absorb impact energy by collapsing in a telescopic manner with increasing energy level; and

    wherein the system is designed such that first stage absorbs impact energy of up to 450 Joules.

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