US5312042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray apparatus comprising a vortex tube
Assignee: EIDP Inc
•
Filing: 1993-08-26
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Granted: 1994-05-17
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Expires: 2013-08-26
Abstract
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.
Inventors
- 👤 John C. Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:56
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/10; B05B7/16; B05B7/1606; B05B7/1613
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
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.
Claim 2
Independent Claim
122 words
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.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1, further comprising a means for measuring the pressure in the warm air conduit.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1, further comprising a means for measuring the pressure in the cold air conduit.
Claim 5
Dependent Claim
17 words
The apparatus of claim 1, further comprising a means for measuring the temperature of the warm air.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1, wherein the means for supplying compressed air is a compressor.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1, further comprising a muffler for the relatively cold air produced by the vortex tube unit, before the relational cold air is exhausted into the ambient environment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |