Claims
- 1. A roadway marker comprising a body member having an upper generally convex surface and a lower generally planar surface, said planar surface being configured to be adhered directly to a roadway surface, said body member being injection molded as a solid, one-piece structure formed from a rigid closed-cell foam thermoplastic material.
- 2. The roadway marker of claim 1 wherein said body member is formed using a chemical blowing agent.
- 3. The roadway marker of claim 1 wherein said thermoplastic material is high impact polystyrene.
- 4. The roadway marker of claim 1 wherein said planar surface is formed with an array of recesses and said recesses have a depth no greater than as to allow said recesses to completely fill with an adhesive when said marker is installed on a roadway surface.
- 5. The roadway marker of claim 4 wherein said recesses have a depth of approximately 0.020 inch.
- 6. The roadway marker of claim 4 wherein said recesses are defined by an array of closed cell walls and said walls have a thickness of approximately one-eighth inch.
- 7. The roadway marker of claim 1 wherein said thermoplastic material is selected from the group consisting of polyurethane, polycarbonate, acrylonitrile-butadiene-styrene and polyvinyl chloride.
- 8. The roadway marker of claim 1 wherein said planar surface is formed with an array of projections defining spaces between adjacent projections and said spaces have a depth no greater than as to allow said spaces to completely fill with an adhesive when said marker is installed on a roadway surface.
- 9. The roadway marker of claim 8 wherein said spaces have a depth of approximately 0.020 inch.
- 10. The roadway marker of claim 8 wherein said projections are spaced from one another by approximately one-quarter inch.
Parent Case Info
This is a continuation of application Ser. No. 08/586,343 filed on Mar. 21, 1996, now abandoned.
US Referenced Citations (25)
Continuations (1)
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Number |
Date |
Country |
Parent |
586343 |
Mar 1996 |
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