Patent ID: 6267530
Filing Date: 2001-07-31
Classification: E01F

Abstract:
A reflective roadway marker having a one piece body with at least one reflective plate means for attachment, said one piece body comprising:multiple hollow cavities, two arcuate sides, a top portion, a sealed planar base, said sealed planar base having a bottom surface with textured, disontinous grooves and two inclined planar faces, each of said planar faces having a planar recessed portion where the open ends of hollow cavities are located and where one reflective plate means can be attached, said planar recessed portions having the top ends of load carrying partition walls defining said hollow cavities within one said piece body, each of said top ends of load carrying partition walls is having a wedge shaped top surface, said wedge shaped top surfaces are being adopted for structural enhancement and to maximize the air gap areas at the open ends of said hollow cavities, said load carrying partition walls each having inwardly formed angle of about 2 to 5 degrees with respect to the center line of said corresponding hollow cavity; andreflective plate means for attachment to the top portions of said wedge shaped top surfaces and periphery of said planar recessed portion of said inclined planar faces of said one piece body, said reflective plate means having inside surface with multiple of cube-corner reflective elements and planar outside surface, said inside surface sonically wedded to said wedge shaped top surfaces thereby fusing a portion of said cube corner reflective elements to said wedge shaped top surfaces thereby defining cell like inside surface upon the reflective plate means, each said cell having the remaining cube corner reflective elements, said planar outside surface can be divided into slightly recessed cell like planar surfaces.