US 4,070,095 AGranted

Pavement marker and reflector assembly

AssigneeITL Industries, Inc.

InventorDonald C. Suhr

Life of this patent

Estimating the term…

Loading patent…

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.

Claims6

Dependent claims

A reflector assembly comprising:

first and second unitary plate-like members;
said first plate-like member comprising a reflector of light transmitting material, one face of said first plate-like member comprising a smooth, light receiving surface and the other face thereof comprising a light reflecting surface;
a plurality of retrodirective reflector elements formed on said other face;
each of said reflector elements having a base at the plane of said other face and projecting outwardly therefrom to an apex;
each of said reflector elements having an axis passing through the apex thereof, said axis extending at an acute angle with respect to the normal to said one face;
said second member having an inner face and an outer face;
said first and second members being secured together throughout their peripheries to define an enclosed air space therebetween with the inner face of said second member being disposed in opposed relationship with said other face of said first member;
and a plurality of elongated support pegs each having a transverse cross-section in a plane parallel to said plate-like members that is smaller than said reflector elements;
each of said support pegs having an inner end formed integral with one of said other face and inner face of said first and second members, respectively;
each of said support pegs extending from its inner end across said air space to an outer free end in abutting engagement with the other of said other face and inner face of said first and second members, respectively, such that one end of each support peg is in contact with at least one of said reflector elements;
said support pegs being spaced from the secured together peripheries of said first and second members and from each other in all directions such that each support peg is surrounded by a cluster of reflector elements out of contact with any of the support pegs and such that said support pegs provide support for the portions of said members spanning the distance between the secured together peripheries of said members;
and each support peg having a length such that the apices of said reflector elements are held by said support pegs in spaced relationship with respect to said inner face of said second member.

9 more elements

A pavement marker comprising:

a body having a base for engagement with the surface of a roadway, a reflector assembly mounted on said body, said reflector assembly comprising first and second unitary plate-like members;
said first plate-like member comprising a reflector of light transmitting material;
one face of said first plate-like member comprising a smooth, light receiving surface and the other face thereof comprising a light reflecting surface;
a plurality of retrodirective reflector elements formed on said other face;
each of said reflector elements having a base at the plane of said other face and projecting outwardly therefrom to an apex;
each of said reflector elements having an axis passing through the apex thereof, said axis extending at an acute angle with respect to the normal to said one face;
said second member having an inner face and an outer face;
said first and second members being secured together throughout their peripheries to define an enclosed air space therebetween with the inner face of said second member being disposed in opposed relationship with said other face of said first member;
and a plurality of elongated support pegs each having a transverse cross-section in a plane parallel to the plane of said plate-like members that is smaller in cross-section than said reflector elements;
each of said support pegs having an inner end formed integral with one of said other face and inner face of said first and second members;
respectively;
each of said support pegs extending from its inner end across said air space to an outer free end in abutting engagement with the other of said other face and inner face of said first and second members, repsectively, such that one end of each support peg is in contact with at least one of said reflector elements;
said support pegs being spaced from the secured together peripheries of said first and second members and from each other in all directions such that each support peg is surrounded by a cluster of reflector elements out of contact with any of the support pegs and such that said support pegs provide support for the portions of said members spanning the distance between the secured together peripheries of said members;
and each support peg having a length such that the apices of said reflector elements are held by said support pegs in spaced relationship with respect to said inner face of said second member, and said reflector assembly being mounted on said body such that said plate-like members extend transversely of the fore-and-aft axis of said body.

11 more elements

Dependencies are inferred from the claim text.