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US 4,863,309 AGranted
Method of removing pavement marking materials from asphalt surfaces
OwnerMaxwell H. Corbin, Jr., Peter D. Butlerinventors
Life of this patent
Estimating the term…
Abstract
A method of removing pavement marking materials on an asphalt surface which comprises heating the surface of the asphalt roadway in which the pavement marking materials have been installed to a temperature just below that at which the pavement marking materials will liquify using an infrared heater and then cooling the pavement marking materials to a temperature below about 100.degree. F. and then peeling off the pavement marking materials from the asphalt surface.
Claims6
A method of removing pavement marking material from an asphalt surface which comprises
- exposing the area of said asphalt surface underneath and adjacent to said pavement marking material which is to be removed to a source of infrared radiation at an energy level and for a sufficient period of time to raise the temperature of said area of said asphalt surface and said pavement marking material which is to be removed to a temperature which is just below the temperature at which said pavement marking material will melt,
- removing said source of infrared radiation,
- cooling said pavement marking material to a temperature at which said pavement marking material may be peeled from said asphalt surface, and
- peeling said pavement marking material from said asphalt surface.
1 more element
Dependencies are inferred from the claim text.