Roadway impact attenuator
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United States of America Patent
Stats
-
May 12, 1992
Grant Date -
N/A
app pub date -
Sep 4, 1990
filing date -
Sep 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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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