The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1993
Filed:
Jun. 05, 1991
John F Laturner, Carmichael, CA (US);
Energy Absorption Systems, Inc., Chicago, IL (US);
Abstract
An energy-absorbing crash barrier is provided with multiple energy-absorbing elements. Each element includes an expanded metal sheet formed as a tubular column which is internally braced with foam. In some of the sections multiple metal columns are provided, one eccentrically positioned within the other. The expanded metal columns provide the major energy-absorbing elements of the barrier, and the eccentrically positioned columns define a preferred bending direction which tends to redirect an axially impacting vehicle away from a hardpoint. The columns in the individual elements are graduated in axial stiffness such that a forward section tends to collapse before the rearward sections, thereby providing staged collapse.