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Snow plowable pavement marker
| Details |
Inventors: Suhr, Donald C.; Domaracki, John F.; Arnott, Robin A.;
Assignee: ITL Industries, Inc. (Newark, OH)
Primary Examiner: Byers; Nile C.
Assistant Examiner:
Attorney, Agent or Firm: Reising, Ethington, Barnard, Perry & Brooks
A snow plowable pavement marker including a body having a base adapted to be secured to the surface of a roadway in such a manner that the fore and aft axis of the body extends parallel to the direction of travel of vehicles. A pair of snow plow ramp sections are secured to the body on opposite sides of the fore and aft axis thereof, the ramp sections including a pair of oppositely projecting snow plow ramps. The snow plow ramps each has an inner wall adjacent the fore and aft axis, an outer wall on the opposite side of the respective inner wall from the fore and aft axis, and a reinforcing rib extending along the length of the ramp between the respective inner and outer walls thereof. Each of the snow plow ramps has an enlarged end adjacent the pavement marker body, and decreases in cross-section to a relatively sharp tip portion at the distal end thereof spaced from the pavement marker body such that snow plows and like equipment will first contact the snow plow ramps at the tip portions and be guided over the pavement marker body by the snow plow ramps. Drain slots are formed in the edges of the inner walls, reinforcing ribs and outer walls of the snow plow ramps adjacent the plane of the base providing a passage for drainage of liquid from the space between the snow plow ramps. The snow plow ramps are made up primarily of plastic material, with the reinforcing rib, in one embodiment, being of metal interlocked with the plastic material. |
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DETAILED DESCRIPTION The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1.
A snow plowable pavement marker comprising: a body having a fore and aft axis that extends parallel to the direction of travel when the body is secured to the surface of a roadway; a pair of snow plow ramps projecting from said body on opposite sides of said fore and aft axis; each of said snow plow ramps having an inner side wall of plastic material adjacent said fore and aft axis, an outer side wall of plastic material spaced from said inner side wall and located on the opposite side thereof from said fore and aft axis, a top surface at least partially or plastic material extending between the upper edges of said inner and outer side walls, and at least one reinforcing rib extending along the length thereof between said inner and outer side walls with one edge integral with said top surface; each of said snow plow ramps having an enlarged end adjacent said body and decreasing in cross-section to a tip portion at the distal end thereof spaced from said body such that snow plows and like implements moving toward said body in the direction from said tip portions will be guided over said body by said snow plow ramps.
2.
A pavement marker as claimed in claim 1 further including drain slots in the lower edges of said inner wall, reinforcing rib and outer wall providing a passage for draining the space between said ramps.
3.
A pavement marker as claimed in claim 1 wherein said top surfaces are entirely of plastic material and said reinforcing ribs are of plastic material.
4.
A pavement marker as claimed in claim 1 wherein said reinforcing ribs are of metal.
5.
A pavement marker as claimed in claim 4 wherein said reinforcing ribs are each interlocked with the plastic material of the respective ramps.
6.
A pavement marker as claimed in claim 5 further including: a pair of spaced webs of plastic material extending along the length of each of said ramps, the respective metal reinforcing rib being received between said webs, a plurality of openings formed in said respective rib, and a plastic connector extending through each of said openings and integrally joined at its opposite ends to said pair of webs to interlock said metal reinforcing rib with said webs
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