Elastomeric pavement marker
AssigneeMinnesota Mining and Manufacturing Company
InventorDavid C. May
Life of this patent
Estimating the term…
Abstract
Described is a raised pavement marker comprised of (referring to FIG. 1): a flexible foam body 2, a reflective film 4, and a pressure-sensitive adhesive 3. Raised portion 5 provides back support for the reflective film. This pavement marker has significant advantages over existing markers in terms of cost and ease of placement on the road surface. A lane delineation tape is also disclosed.
Claims9
A roadway marker comprising a body having a base which can be attached to the surface of a roadway without requiring a recess or hole in the roadway, and which has a raised surface adapted to face oncoming traffic when the marker is mounted on a roadway, and a reflective material attached to said raised surface on the side adapted to face oncoming traffic, said body being made of a cellular elastomer having a compressive strength of 25 percent compression at less than about 100 kPa.
A roadway marker comprising a body:
- (A) made of a cellular elastomer having a compressive strength of less than about 100 kPa at 25 percent compression;
- (B) having a base which can be attached to the surface of a roadway without requiring a recess or hole in the roadway;
- (C) having raised surface adapted to face oncoming traffic when the marker is mounted on a roadway;
- (D) having a reflective material attached to said raised surface on the side adapted to face oncoming traffic;
- and
- (E) having a shape which supports the back of the raised surface;
- said raised surface characterized by lying flat and face down when struck by a vehicle wheel applying a load of at least 96 KPa and moving toward the reflective side of the raised surface.
Dependencies are inferred from the claim text.