Patent US3336903A successfully refreshed from Google Patents.
US3336903A
Expired / Lapsed
US
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Electrostatic coating apparatus
Assignee: Machines Electrostatiques SA
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Filing: 1964-04-21
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Granted: 1967-08-22
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Marcel A R Point
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
B; B05; B05C; B05C19/00; B05C19/02; B05C19/025; B05B; B05B5/00; B05B5/025; B05B5/053; B05B5/0533; B05C19/001; B05C19/002; Y; Y10; Y10S; Y10S118/00; Y10S118/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
APPARATUS FOR COATING ARTICLE WITH A FINELY DIVIDED COATING SUBSTANCE COMPRISING, IN COMBINATION, MEANS FOR FORMING A FLUIDIZED BED OF THE FINELY DIVIDED COATING SUBSTANCE ADJACENT A SURFACE OF THE ARTICLE TO BE COATED, CHARGING ELECTRODE MEANS IN JUXTAPOSITION WITH SAID FLUIDIZED BED FOR APPLYING A FIRST ELECTRICAL POTENTIAL TO THE INDIVIDUAL PARTICLES OF COATING SUBSTANCE THEREIN, MEANS FOR CONNECTING SAID ARTICLE TO SECOND ELECTRICAL POTENTIAL, TO ESTABLISH AN ELECTROSTATIC FIELD BETWEEN SAID PARTICLES AND THE SURFACE OF SAID ARTICLE, THE THUS CHARGED PARTICLES BEING GUIDED BY ELECTROSTATIC ATTRACTION TOWARD SAID SURFACE, AND CONTROL ELECTRODE MEANS AT A POTENTIAL DIFFERENT FROM SAID FIRST POTENTIAL AND POSITIONED IN SPACED RELATION WITH SAID CHARGING ELECTRODE MEANS FOR CONTROLLING THE SPATIAL EXTENT OF SAID FLUIDIZED BED.
Claim 2
Dependent Claim
123 words
APPARATUS FOR COATING ARTICLE WITH A FINELY DIVIDED COATING SUBSTANCE COMPRISING, IN COMBINATION, MEANS FOR FORMING A FLUIDIZED BED OF THE FINELY DIVIDED COATING SUBSTANCE ADJACENT A SURFACE OF THE ARTICLE TO BE COATED, CHARGING ELECTRODE MEANS IN JUXTAPOSITION WITH SAID FLUIDIZED BED FOR APPLYING A FIRST ELECTRICAL POTENTIAL TO THE INDIVIDUAL PARTICLES OF COATING SUBSTANCE THEREIN, MEANS FOR CONNECTING SAID ARTICLE TO SECOND ELECTRICAL POTENTIAL, TO ESTABLISH AN ELECTROSTATIC FIELD BETWEEN SAID PARTICLES AND THE SURFACE OF SAID ARTICLE, THE THUS CHARGED PARTICLES BEING GUIDED BY ELECTROSTATIC ATTRACTION TOWARD SAID SURFACE, AND CONTROL ELECTRODE MEANS AT A POTENTIAL DIFFERENT FROM SAID FIRST POTENTIAL AND POSITIONED IN SPACED RELATION WITH SAID CHARGING ELECTRODE MEANS FOR CONTROLLING THE SPATIAL EXTENT OF SAID FLUIDIZED BED.
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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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |