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US 5,312,042 AGranted
Spray apparatus comprising a vortex tube
AssigneeE. I. Du Pont de Nemours and Company
InventorJohn C. Larson
Life of this patent
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Abstract
A system for spraying a coating onto a substrate employing a vortex tube to supply warm air to a spray gun is disclosed. The system allows precise control of air temperature.
Claims6
An apparatus for spraying a coating material onto a substrate, comprising
- (a) a means for supplying compressed air to a vortex tube unit;
- (b) a vortex tube unit for receiving the compressed air at a first inlet and for delivering relatively cold air to a cold air conduit and for delivering warm air to a warm air conduit;
- (c) first control means in said warm air conduit for adjusting the pressure of the warm air;
- (d) second control means in said cold air conduit for adjusting the pressure of the relatively cold air;
- and
- (e) connected with said warm air conduit, a spray means for employing the warm air to atomize the coating material during its application onto the substrate being coated.
3 more elements
Dependencies are inferred from the claim text.