Pactec, Inc.

Douglas S Forrer

Peter Hedgewick

An improved road marker with a one piece shell and recesses containing elongated members with an undercut relief is provided. The road marker contains a retroreflective lens and a bottom surface with a plurality of the recesses protruding into the shell. The cross section of the recesses can be in the shape of a circle, ellipse, triangle or any shaped polygon, and said cross section can vary as a function of the depth of the recess into the shell and the location of said recess on the bottom surface. The cross section of the elongated member in an axial direction can be in the shape of a circle, ellipse, triangle or any shaped polygon. The undercut relief can be in the form of threads, ridges or any type of indentation into the elongated member that provides a rough surface. When the elongated member is permanently attached to the road marker shell, the undercut relief thereon affords increased adherence between the road marker shell and any type of glue or adhesive used to attach the road marker to a road surface.

Road marker with reverse cups

A reflective pavement marker includes a shell having a top wall, a side wall extending from an end of the top wall, and reflective end walls extending from an other end of said top wall, wherein the shell forms an interior cavity. The reflective pavement marker also includes a reflective portion integral with the reflective end wall, a reflective coating covering the reflective portion and a bonding coating covering at least the reflective portion. The reflective pavement marker further includes a filler material within the interior cavity of the shell.

Reflective pavement marker

A pavement marker for a roadway surface includes a lower base portion and a retro-reflective lens mounted on the base portion at an angle to it. A photopolymerizable clear acrylic protective hard coat is deposited over and integrally formed with the front face of the lens for resisting abrasion of the lens and reducing the loss of optical efficiency resulting from such abrasion. The pavement marker also includes a frame of generally arcuate cross-section formed about an edge of the hard coat potentially susceptible to peeling from impact of vehicle tires against the hard coat. The frame is preferably formed as a bead raised from the face of the marker, and the bead includes a sharp interior edge lying generally perpendicular to the lens, adjacent the edge of the hard coat.

Abrasion resistant coating for pavement marker

A pavement marker for roadway surface including a housing 12 having a lower base portion 14 and at least one wall 18 extending substantially upwardly from the base portion 14. A retroreflective lens 20 is mounted on the wall 18 and has a front surface 22 facing away from the wall 18. A photopolymerizable clear acrylic protective hard coat is deposited over the front face of the lens for resisting abrasion of the lens and reducing the loss of optical efficiency resulting from such abrasion. A method of making the pavement marker includes the steps of forming the lens 20 having the front face 22, coating the front face 22 of the lens 20 with a photopolymerizable acrylic composition, irradiating the coating with ultraviolet or electron beam irradiation to cure the acrylic composition to an abrasion resistant coating 24, and mounting the lens 20 in the housing 12 to dispose the coated front face 22 away from the housing 12.

Abrasive resistant pavement marker

A pavement marker for roadway surface including a housing 12 having a lower base portion 14 and at least one wall 18 extending substantially upwardly from the base portion 14. A retro-reflective lens 20 is mounted on the wall 18 and has a front surface 22 facing away from the wall 18. A photopolymerizable clear acrylic protective hard coat is deposited over the front face of the lens for resisting abrasion of the lens and reducing the loss of optical efficiency resulting from such abrasion. A method of making the pavement marker includes the steps of forming the lens 20 having the front face 22, coating the front face 22 of the lens 20 with a photopolymerizable acrylic composition, irradiating the coating with ultraviolet or electron beam irradiation to cure the acrylic composition to an abrasion resistant coating 24, and mounting the lens 20 in the housing 12 to dispose the coated front face 22 away from the housing 12.

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Heath, OH, United States of America

Douglas S Forrer