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Box beam terminals
(United States. Patent and Trademark Office, 2008-02-05)
Guardrail installation designs are described that incorporate a box beam rail as the structural rail member. The box beam rail member may have an open cross-section or a closed cross-section. An impact head is provided to ...
Energy absorbing device having notches and pre-bent sections
(United States. Patent and Trademark Office, 2008-06-24)
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 ...