Road structure – process – or apparatus – Apparatus – Rotating drum – roller or tire
Patent
1976-02-02
1978-01-24
Corbin, John K.
Road structure, process, or apparatus
Apparatus
Rotating drum, roller or tire
350 97, 350105, 404 12, 404 14, G02B 5124
Patent
active
040700950
ABSTRACT:
A pavement marker including a body having a base for engagement with the surface of a roadway, and a reflector assembly mounted on the body for reflecting light from vehicles on the roadway when the fore-and-aft axis of the body is disposed in parallel relationship with the direction of vehicular travel on the roadway. The reflector assembly includes a pair of plate-like members of light transmitting material. The plate-like members each has an outer surface and an inner surface. The plate-like members are secured together at their peripheries with the inner surfaces thereof disposed in opposed relationship. Retrodirective reflector elements are formed on one inner surface, and the apices of the reflector elements are spaced from the other inner surface. A plurality of support members extend between the inner surfaces to maintain the apices of the reflector elements out of contact with the other inner surface and to provide impact strength to the assembly. The support members are spaced from each other so that the reflector elements have no contact with any of the support members. The support members, in addition to providing structural strength to the reflector assembly, may provide for specular reflection of ambient light to enhance the daytime visibility of the pavement marker.
REFERENCES:
patent: 3485148 (1969-12-01), Heenan
patent: 3771851 (1973-11-01), Heenan et al.
patent: 3924929 (1975-12-01), Holmen et al.
Corbin John K.
DELOS Reyes B. W.
ITL Industries, Inc.
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