Road marking apparatus and method
AssigneePrismo Universal Corporation
InventorWayne R. Mitchell
Life of this patent
Estimating the term…
Abstract
The apparatus provides an internal means for spraying and heating quick drying traffic paint to a minimum temperature of 120.degree. F. utilizing a primary heat collector within which engine liquid is in thermal communication with engine exhaust gases and heated compressed air. Such heated engine liquid is then used as a heat transfer medium to elevate the temperature of quick drying traffic paint within a shell and tube heat exchanger.
Claims7
Apparatus for spraying and heating a quick-drying traffic paint composition onto a road surface to a temperature of at least 120.degree. F., said apparatus comprising:
- a vehicle driven by an internal combustion engine,
- an air compressor powered by said engine,
- a paint storage tank,
- a paint sprayer,
- heat collection means having an internal space for holding engine liquid including means for providing heated engine liquid to said internal space, a first set of tubes within and passing through said internal space in communication with and for passing hot engine exhaust gases through said internal space, said first set of tubes being in thermal contact with the liquid contained in said collection means, and a second set of tubes within and passing heated compressed air from said compressor in thermal contact with the liquid contained in said internal space;
- and
- a heat exchanger in fluid communication with said collection means and supplied with said heated liquid for heating traffic paint passed therethrough, traffic paint inlet means connected to said storage tank and paint outlet means connected to said paint sprayer, and inlet means for receiving the heated liquid from said collection means and outlet means for exhausting the liquid to said engine.
Apparatus for spraying and heating a quick-drying traffic paint composition onto a road surface to a temperature of at least 120.degree. F., said apparatus comprising:
- a vehicle driven by an internal combustion engine,
- an air compressor powered by said engine,
- a paint storage tank,
- a paint sprayer,
- heat collection means having an internal space for holding engine liquid including means for providing heated engine liquid to said internal space, a first set of tubes within and passing through said internal space in communication with and for passing hot engine exhaust gases through said internal space, said first set of tubes being in thermal contact with the liquid contained in said collection means, and a second set of tubes within and passing heated compressed air from said compressor in terminal contact with the liquid contained in said internal space;
- a heat exchanger in fluid communication with said collection means and supplied with said heated liquid for heating traffic paint passed therethrough, traffic paint inlet means connected to said storage tank and paint outlet means connected to said paint sprayer, and inlet means for receiving the heated liquid from said collection means and outlet means for exhausting the liquid to said engine;
- and
- a temperature regulation means for maintaining the temperature of the heated engine liquid below a predetermined value including engine exhaust by-pass tubing and valve means between said tubing and the engine exhaust gases issuing from said first set of tubes, said valve means directing the engine exhaust gases through said by-pass tubing when a predetermined temperature is reached in said heated engine liquid within said internal space.
Dependencies are inferred from the claim text.