Patent US2853457A successfully refreshed from Google Patents.
US3323933A
Expired / Lapsed
US
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Electrostatic powder application
Assignee: Machines Electrostatiques SA
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Filing: 1963-06-21
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Granted: 1967-06-06
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Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 Barford John Cowper
- 👤 Dias Peter Francis
- 👤 Glentworth John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:42
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/007; B05B; B05B5/00; B05B5/08; B05B5/14; B05C; B05C19/00; B05C19/001; B05C19/002; B05C19/02; B05C19/025; B05D7/00; B05D7/20; B05D2401/00; B05D2401/30; B05D2401/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF COATING AN OBJECT WITH A POWDER MATEERIAL, WHICH COMPRISES MECHANICALLY DISPERSING THE POWDER BY MEANS OF A ROTATING CHARGING ELECTRODE FORMED WITH DISCHARGE EDGES IN THE VICINITY OF WHICH THE POWDER PARTICLES ARE CAUSED TO MOVE BY THE MECHANICAL DISPERSING ACTION OF SAID ELECTRODE, SAID CHARGING ELECTRODE BREAKING UP AGGLOMERATIONS OF THE POWDER IN THE VICINITY OF THE CHARGING ELECTRODE, AND MAINTAINING SAID CHARGING ELECTRODE AT A POTENTIAL DIFFERENCE WITH RESPECT TO THE OBJECT, SAID ELECTRODE ELECTROSTATICALLY CHARGING SAID DISPERSED POWDER PARTICLES, THE CHARGED PARTICLES BEING ATTRACTED ON TO THE OBJECT.
Claim 2
Independent Claim
94 words
A METHOD OF COATING AN OBJECT WITH A POWDER MATEERIAL, WHICH COMPRISES MECHANICALLY DISPERSING THE POWDER BY MEANS OF A ROTATING CHARGING ELECTRODE FORMED WITH DISCHARGE EDGES IN THE VICINITY OF WHICH THE POWDER PARTICLES ARE CAUSED TO MOVE BY THE MECHANICAL DISPERSING ACTION OF SAID ELECTRODE, SAID CHARGING ELECTRODE BREAKING UP AGGLOMERATIONS OF THE POWDER IN THE VICINITY OF THE CHARGING ELECTRODE, AND MAINTAINING SAID CHARGING ELECTRODE AT A POTENTIAL DIFFERENCE WITH RESPECT TO THE OBJECT, SAID ELECTRODE ELECTROSTATICALLY CHARGING SAID DISPERSED POWDER PARTICLES, THE CHARGED PARTICLES BEING ATTRACTED ON TO THE OBJECT.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |