Patent US3382091A successfully refreshed from Google Patents.
US3382091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic coating methods and apparatus for conductive coating materials
Assignee: Ransburg Corp
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Filing: 1966-01-07
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Granted: 1968-05-07
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Expires: 1986-01-07
Abstract
No abstract record available.
Inventors
- 👤 Edward W Drum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:13
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/16; B05B5/1608; B05B5/1616
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
IN A METHOD OF ELECTROSTATICALLY COATING AN ARTICLE WITH A COATING COMPOSITION HAVING CONDUCTIVE PARTICLES SUSPENDED WITHIN A LIQUID CONTINUUM OF RELATIVELY LOW CONDUCTIVITY, THE STEPS OF FLOWING SAID COATING COMPOSITION IN THE FORM OF A COLUMN BETWEEN FIRST AND SECOND POINTS, MAINTAINING SAID POINTS AT DIFFERENT ELECTRICAL POTENTIALS, AND PROMOTING ELECTRICAL IMPEDANCE BETWEEN SAID TWO POINTS IN THE PAINT COLUMN BY CYCLICALLY VARYING THE POTENTIAL MAINTAINED BETWEEN SAID TWO POINTS WHILE CONTINUING THE FLOW OF COATING COMPOSITION BETWEEN SAID POINTS.
Claim 2
Dependent Claim
81 words
IN A METHOD OF ELECTROSTATICALLY COATING AN ARTICLE WITH A COATING COMPOSITION HAVING CONDUCTIVE PARTICLES SUSPENDED WITHIN A LIQUID CONTINUUM OF RELATIVELY LOW CONDUCTIVITY, THE STEPS OF FLOWING SAID COATING COMPOSITION IN THE FORM OF A COLUMN BETWEEN FIRST AND SECOND POINTS, MAINTAINING SAID POINTS AT DIFFERENT ELECTRICAL POTENTIALS, AND PROMOTING ELECTRICAL IMPEDANCE BETWEEN SAID TWO POINTS IN THE PAINT COLUMN BY CYCLICALLY VARYING THE POTENTIAL MAINTAINED BETWEEN SAID TWO POINTS WHILE CONTINUING THE FLOW OF COATING COMPOSITION BETWEEN SAID POINTS.
Claim 3
Dependent Claim
100 words
AN ELECTROSTATIC COATING APPARATUS FOR COATING AN ARTICLE WITH A COATING COMPOSITION HAVING CONDUCTIVE PARTICLES SUSPENDED WITHIN A LIQUID CONTINUUM OF RELATIVELY LOW CONDUCTIVITY COMPRISING, AN ATOMIZER HAVING AN ATOMIZING ZONE, MEANS FOR FEEDING SAID COATING COMPOSITION TO SAID ATOMIZING ZONE IN THE FORM OF A COLUMN, MEANS FOR MAINTAINING A HIGH VOLTAGE ON SAID COATING COMPOSITION AT A FIRST POINT ADJACENT SAID ATOMIZING ZONE, MEANS FOR MAINTAINING A SECOND POINT OF SAID COLUMN, SPACED FROM SAID FIRST POINT, AT A POTENTIAL DIFFERENT FROM SAID FIRST POINT, AND MEANS FOR CYCLICALLY VARYING THE POTENTIAL BETWEEN SAID FIRST AND SECOND POINTS.
Claim 4
Dependent Claim
100 words
AN ELECTROSTATIC COATING APPARATUS FOR COATING AN ARTICLE WITH A COATING COMPOSITION HAVING CONDUCTIVE PARTICLES SUSPENDED WITHIN A LIQUID CONTINUUM OF RELATIVELY LOW CONDUCTIVITY COMPRISING, AN ATOMIZER HAVING AN ATOMIZING ZONE, MEANS FOR FEEDING SAID COATING COMPOSITION TO SAID ATOMIZING ZONE IN THE FORM OF A COLUMN, MEANS FOR MAINTAINING A HIGH VOLTAGE ON SAID COATING COMPOSITION AT A FIRST POINT ADJACENT SAID ATOMIZING ZONE, MEANS FOR MAINTAINING A SECOND POINT OF SAID COLUMN, SPACED FROM SAID FIRST POINT, AT A POTENTIAL DIFFERENT FROM SAID FIRST POINT, AND MEANS FOR CYCLICALLY VARYING THE POTENTIAL BETWEEN SAID FIRST AND SECOND POINTS.
References Cited (Backward Citations)
US2509277A
Cited
US3083121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |