Road-marking material heating system
First Claim
1. A mechanical heat-generating system for indirectly heating a road-marking material being applied onto a road surface from a vehicle comprising:
- heat exchanger means for placing a road-marking material in indirect contact with a heat exchange fluid at an elevated temperature to raise the temperature of the road-marking material;
heat exchange fluid storage tank means for storing a reservoir of the heat exchange fluid at a preselected elevated temperature during road-marking material application;
heat-generator means for mechanically heating the heat exchange fluid during the passage of the fluid through the generator to raise the temperature of the heat exchange fluid to be passed to said heat exchange fluid storage tank means;
conduit means for connecting in fluid communication said heat exchanger means, said storage tank means and said heat-generator means; and
pump means for pumping the heat exchange fluid through said heat exchanger means, said storage tank means and said heat-generator means so that the temperature of the heat exchange fluid is raised during its passage through said heat-generator means, the heat exchange fluid is passed from said heat-generator means to said storage tank means to be stored therein at the preselected elevated temperature and is passed from said storage tank means to said heat exchanger means.
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Abstract
A mechanical heat-generating system for heating a road-marking material being sprayed onto a road surface from a vehicle is disclosed. The system includes a heat exchanger for placing the road-marking material in indirect contact with a heat exchange fluid at an elevated temperature to raise the temperature of the road-marking material. The heat exchange fluid is stored in a tank which functions as a controlled heat source. A heat generator mechanically heats the heat exchange fluid during the passage of the fluid through the generator. A pump mechanism pumps the fluid through conduits connecting the heat exchanger, storage tank and heat generator.
27 Citations
26 Claims
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1. A mechanical heat-generating system for indirectly heating a road-marking material being applied onto a road surface from a vehicle comprising:
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heat exchanger means for placing a road-marking material in indirect contact with a heat exchange fluid at an elevated temperature to raise the temperature of the road-marking material; heat exchange fluid storage tank means for storing a reservoir of the heat exchange fluid at a preselected elevated temperature during road-marking material application; heat-generator means for mechanically heating the heat exchange fluid during the passage of the fluid through the generator to raise the temperature of the heat exchange fluid to be passed to said heat exchange fluid storage tank means; conduit means for connecting in fluid communication said heat exchanger means, said storage tank means and said heat-generator means; and pump means for pumping the heat exchange fluid through said heat exchanger means, said storage tank means and said heat-generator means so that the temperature of the heat exchange fluid is raised during its passage through said heat-generator means, the heat exchange fluid is passed from said heat-generator means to said storage tank means to be stored therein at the preselected elevated temperature and is passed from said storage tank means to said heat exchanger means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for applying road-marking material to a road surface comprising:
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a vehicle; a road-marking material heating and applying system carried on said vehicle, said system including; heat exchanger means for placing a road-marking material in indirect contact with a heat exchange fluid at an elevated temperature to raise the temperature of the road-marking material; heat exchange fluid storage tank means for storing a reservoir of the heat exchange fluid at a preselected elevated temperature during road-marking material application; heat-generating means for mechanically heating the heat exchange fluid during the passage of the fluid through the generator means, said generator means being located so that the fluid heated by passage through said generator means passes to said storage tank means to raise the temperature of the heat exchange fluid in said storage tank means; conduit means for connecting in fluid communication said heat exchanger means, said storage tank means and said heat-generator means; said heat-generator means includes at least one orifice having an area substantially less than the area of the conduit means immediately upstream of said generator means; pump means for pumping the heat exchange fluid through said heat exchanger means, said storage tank means and said heat-generator means so that the temperature of the heat exchange fluid is raised during its passage through said heat-generator means, the heat exchange fluid is passed from said heat-generator means to said storage tank means to be stored therein at the preselected elevated temperature and is passed from said storage tank means to said heat exchanger means; at least one road-marking material holding tank; marking material applicator means for applying the marking material to a road surface; tubing for carrying the marking material from said holding tank, through said heat exchanger means and thereafter to said applicator means; and control means for controlling the temperature at which the heat exchange fluid is held in said storage tank means. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification