Energy absorbing device having notches and pre-bent sections
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According to one embodiment of the invention, an energy-absorbing device includes a section of material having a plurality of crush zones along a longitudinal length thereof, a first crush zone of the plurality of crush zones including a pair of opposed first bends formed in a first side and a second side of the section, a pair of opposed second bends formed in a third side and a fourth side of the section, and a first set of notches spaced around a perimeter of the section at a longitudinal location corresponding to the first bends and second bends. The first bends project in a direction that is one of inward and outward and the second bends project in a direction opposite that of the first bends. At least one of the other crush zones includes a second set of notches spaced around the perimeter of the section.
Abu-odeh, Akram Y.; Bligh, Roger P.; Alberson, Dean C.; Ness, Jacob R. (2008). Energy absorbing device having notches and pre-bent sections. United States. Patent and Trademark Office; Texas A&M University. Libraries. Available electronically from