US3348965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic spraying
Assignee: Ransburg Corp
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Filing: 1964-02-04
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Granted: 1967-10-24
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Expires: 1984-02-04
Abstract
No abstract record available.
Inventors
- 👤 Edward W Drum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; B05D1/04; B05D2320/00; B05D2601/00; B05D2601/02; B05D2601/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A COATING PROCESS IN WHICH A LIQUID ORGANIC SOLVENT-BASED PAINT IS MECHANICALLY ATOMIZED TO FORM SPRAY PARTICLES AND IN WHICH THE MATERIAL BEING SPRAYED IS IN A STATE OF HIGH SPATIAL CONCENTRATION WHEN PASSED THROUGH A ZONE IN WHICH THE ATMOSPHERIC IONS ARE IN A STATE OF HIGH SPATIAL CONCENTRATION TO CAUSE THE SPRAY PARTICLES TO BECOME ELECTROSTATICALLY CHARGED TO THEREBY IMPROVE THE EFFICIENCY OF DEPOSITION OF THE PAINT BEING SPRAYED UPON A TARGET, SAID PAINT CONTAINING ELECTRICALLY CONDUCTIVE METALLIC PARTICLES DISPERSED IN AN ORGANIC SOLVENT-BASED LIQUID CONTINUUM AND SAID PARTICLES TENDING TO BECOME ORIENTED TO CAUSE THE ELECTROSTATIC POTENTIAL GENERATING SAID ATMOSPHERIC IONS TO "SHORT OUT" THROUGH THE PAINT AND THE ELECTROSTATIC POTENTIAL USED BEING SUFFICIENT TO "CHORT OUT" THROUGH SAID PAINT, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID LIQUID CONTINUUM OF SAID PAINT AN AGENT WHICH INCREASES THE CONDUCTIVITY THEROF TO CAUSE SAID CONTINUUM TO BECOME SUFFICIENTLY CONDUCTIVE SO THAT A PORTION OF SAID ELECTROSTATIC POTENTIAL DRAINS OFF THROUGH THE PAINT TO THEREBY LOWER THE ELECTROSTATIC POTENTIAL TO A LEVEL INCAPABLE OF CAUSING SAID ORIENTATION OF CONDUCTIVE PARTICLES AND THE SHORTING OUT INCIDENTAL THERETO.
Claim 2
Dependent Claim
187 words
IN A COATING PROCESS IN WHICH A LIQUID ORGANIC SOLVENT-BASED PAINT IS MECHANICALLY ATOMIZED TO FORM SPRAY PARTICLES AND IN WHICH THE MATERIAL BEING SPRAYED IS IN A STATE OF HIGH SPATIAL CONCENTRATION WHEN PASSED THROUGH A ZONE IN WHICH THE ATMOSPHERIC IONS ARE IN A STATE OF HIGH SPATIAL CONCENTRATION TO CAUSE THE SPRAY PARTICLES TO BECOME ELECTROSTATICALLY CHARGED TO THEREBY IMPROVE THE EFFICIENCY OF DEPOSITION OF THE PAINT BEING SPRAYED UPON A TARGET, SAID PAINT CONTAINING ELECTRICALLY CONDUCTIVE METALLIC PARTICLES DISPERSED IN AN ORGANIC SOLVENT-BASED LIQUID CONTINUUM AND SAID PARTICLES TENDING TO BECOME ORIENTED TO CAUSE THE ELECTROSTATIC POTENTIAL GENERATING SAID ATMOSPHERIC IONS TO "SHORT OUT" THROUGH THE PAINT AND THE ELECTROSTATIC POTENTIAL USED BEING SUFFICIENT TO "CHORT OUT" THROUGH SAID PAINT, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN SAID LIQUID CONTINUUM OF SAID PAINT AN AGENT WHICH INCREASES THE CONDUCTIVITY THEROF TO CAUSE SAID CONTINUUM TO BECOME SUFFICIENTLY CONDUCTIVE SO THAT A PORTION OF SAID ELECTROSTATIC POTENTIAL DRAINS OFF THROUGH THE PAINT TO THEREBY LOWER THE ELECTROSTATIC POTENTIAL TO A LEVEL INCAPABLE OF CAUSING SAID ORIENTATION OF CONDUCTIVE PARTICLES AND THE SHORTING OUT INCIDENTAL THERETO.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |