Sheet material marker surface for roadways and the like

Details Sheet material marker surface for roadways and the like Sheet material marker surface for roadways and the like

1985-09-23

1987-07-21

Corbin, John K.

G02B 5124

Patent

active

046814019

ABSTRACT:
This disclosure involves an improved thin surface-marking strip for adhering to a road surface or the like, employing novel flattened somewhat saw-tooth wedges embodying retroreflective material and of preferably substantially trapezoidal shape, with rather critical separations between wedges relative to height and length of the wedges to obviate shadow effects, provide improved daylight observation, and to increase effectiveness and life, particularly under conditions of rain-covered surfaces and snow removal.

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patent: 3954324 (1976-05-01), Arnott et al.
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patent: 4040760 (1977-08-01), Wyckoff
patent: 4069787 (1978-01-01), Wyckoff
patent: 4145112 (0979-03-01), Crone et al.
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patent: 4236788 (1980-12-01), Wyckoff
patent: 4279471 (1981-07-01), Rowland
patent: 4388359 (1983-06-01), Ethen et al.

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