Direction-indicating surface marker strip for roadways and the l

Details Direction-indicating surface marker strip for roadways and the l Direction-indicating surface marker strip for roadways and the l

1978-10-23

1980-12-02

Corbin, John K.

Road structure, process, or apparatus

Apparatus

Rotating drum, roller or tire

350106, 404 14, G02B 512

Patent

active

042367883

ABSTRACT:
This disclosure is concerned with providing a marker strip for attachment to roadways and other surfaces, comprising an upper layer of spaced transverse prisms and a lower layer of retroreflective sheeting, providing direction color discrimination, where desired, and substantially constant brightness of light retroreflection with distance over wide angles of incident light upon the strip.

REFERENCES:
patent: 3920346 (1975-11-01), Wyckoff
patent: 4040760 (1917-08-01), Wyckoff
patent: 4069281 (1978-01-01), Eigenmann
patent: 4069789 (1978-01-01), Wyckoff
patent: 4145112 (1979-03-01), Crone et al.

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