Roadway impact attenuator

Details Roadway impact attenuator Roadway impact attenuator

1990-09-04

1992-05-12

Kundrat, Andrew V.

Fences

Highway guard

248 66, A01K 300

Patent

active

051120283

ABSTRACT:
A collapsible roadway impact attenuator includes an array of spaced parallel support elements arranged to move axially when the attenuator is struck by impacting vehicle. Elastomeric energy absorbing sheets are rigidly secured between adjacent support elements so as to extend axially and horizontally. When the attenuator is struck axially by a vehicle, the support elements move towards one another and the energy absorbing sheets form at least three inflections, thereby enhancing energy absorbing efficiency of the attenuator. Tethers can be mounted between overlying elastomeric sheets to increase the number of inflections and the energy efficiency of the attenuator.

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patent: 3944187 (1976-03-01), Walker
patent: 3982734 (1976-09-01), Walker
patent: 4023652 (1977-05-01), Torke
patent: 4674911 (1987-06-01), Gertz
patent: 4815565 (1989-03-01), Sicking et al.
patent: 4844213 (1989-07-01), Travis

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