Patent ID: 7931963

Claim:
An energy absorbing member comprising, an thermoplastic cellular polymer attached to a structural element, wherein the cellular polymer has an average cell size of at least about 0.75 mm and each one of C E /C T , C V /C T , and C H /C T is about 0.25 to about 0.37 with at least one of C E /C T , C V /C T , and C H /C T having a compressive efficiency of at least 70% at a 60% strain, C E , C V , and C H being the compressive strength of the cellular polymer in each of three orthogonal directions E, V and H where C T equals the sum of C E , C V , and C H , wherein the structural element is a helmet skin, a vehicular door panel, a vehicular door beam, a vehicular roof, or a vehicular dash.