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Stiffener core for a highway marker

  • US 5,205,236 A
  • Filed: 07/26/1991
  • Issued: 04/27/1993
  • Est. Priority Date: 07/26/1991
  • Status: Expired due to Term
First Claim
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1. An impact resistant marker, comprising in combination:

  • a base adapted to be secured to the ground and having an upward protruding mandrel;

    a post having a longitudinal hole extending therethrough and having a lower end;

    an elastomeric flexible element having a lower end secured to the mandrel and an upper end secured to the lower end of the post, so as to allow the post to pivot from an upright position to an inclined position if struck by a vehicle;

    a stiffener core extending through the hole in the post from the lower end o the post upward for a selected distance, to cause the post to pivot at the flexible element rather bend above the flexible element, if struck by a vehicle; and

    wherein the hole is generally elliptical in transverse cross-section, having cross-sectional major and a minor dimensions, and wherein the core has a lower portion that is generally elliptical in transverse cross-section, having substantially the same dimensions as the major and minor dimensions of the hole, the core having an upper portion that has substantially the same major dimension but a lesser minor dimension than the hole.

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