Road structure – process – or apparatus – Traffic director – Attenuated lane marker type
Patent
1990-05-23
1992-03-24
Britts, Ramon S.
Road structure, process, or apparatus
Traffic director
Attenuated lane marker type
G08B 502
Patent
active
050982176
ABSTRACT:
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.
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Forrer Douglas S.
Hedgewick Peter
Britts Ramon S.
Pac-Tec, Inc.
Schoeppel Roger J.
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