Patent ID: 7530548
Filing Date: 2009-05-12
Classification: E01F,Y10T

Abstract:
1. A guardrail system for installation along a roadway to redirect an errant vehicle, comprising: a plurality of spaced support posts; a guardrail mounted on the plurality of support posts by a plurality of securing members, each securing member passing through a respective opening in the guardrail and an opening in a respective support post; a releasing member on the securing member and on an outer side of one of the guardrail and the support post, the releasing member deforming to release the guardrail from the support post during a vehicle impact; and a positioning member structurally separate from the securing member engaging the releasing member and extending through the opening in one of the guardrail and the support post for centering the releasing member with respect to a central portion of one of the openings in the guardrail and the support post by an edge of the positioning member engaging one end portion of the opening to prevent substantial overlap or engagement between an edge of the opening and a radially exterior portion of the releasing member and enabling the releasing member to be deformed and pass through the opening to release the guardrail from the support post.