Abrasion resistant coating for pavement marker
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United States of America Patent
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-
Mar 24, 1992
Grant Date -
N/A
app pub date -
May 23, 1990
filing date -
May 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Cited Art Landscape
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