Energy absorbing impact barrier

Details Energy absorbing impact barrier Energy absorbing impact barrier

B - Operations, Transporting

61

L

B61L 29/02 (2006.01) E01F 13/04 (2006.01) F16F 1/14 (2006.01)

Patent

CA 2139258

An energy absorbing motor vehicle barrier includes a collapsible energy absorption assembly which is stored in a vault in the ground. Upon deployment, the energy absorption apparatus is lifted out of its vault, where it thereby expands and deploys. The energy absorption apparatus includes four stages of pairs of elastomeric torsion springs configured into scissors arrangements, with each stage having a progressively higher effective spring rate, to thereby decelerate a vehicle which strikes the apparatus.

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