Guard rail
AssigneeE. I. Du Pont de Nemours and Company
InventorsColin Anolick, Howard James Kutsch
Life of this patent
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Abstract
A shock-absorbing unit comprising a post with upper and lower generally coparallel passages therethrough, e.g., bores, for the reception of individual push rods, the inboard ends of the push rods supporting a rail, an oriented elastomer, e.g., a copolyetherester, connecting the outboard end of the push rods and the post, and means for pretensioning the elastomer, e.g., a wedge, a predetermined amount.
Claims8
A shock-absorbing unit for vehicle barriers comprising, in combination, a post provided with upper and lower generally coparallel passages therethrough for the reception of individual push rods, the inboard ends of said push rods supporting a rail, means for supporting an oriented elastomeric belt fixed to the outboard ends of said push rods, said belt of oriented elastomer encircling said support means and said post between said passages, and means for pretensioning the elastomeric member a predetermined amount thereby affording an energy absorber responsive to displacement of the push rods under impact.
Dependencies are inferred from the claim text.