US3895262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coating articles by means of electrostatically charged articles
Assignee: Gema Switzerland GmbH
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Filing: 1974-08-29
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Granted: 1975-07-15
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Expires: 1994-08-29
Abstract
Abstract An apparatus for coating articles or the like by means of electrostatically charged particles comprising at least two electrodes associated with an atomizer nozzle for these particles and a regulatable or controllable high-voltage generator for delivering a respective potential of different magnitude but the same sign to both electrodes. A stabilizing stage is provided between the high-voltage generator and the electrodes, this stage maintaining constant the potential difference between the electrodes at a predetermined value over the entire regulation range of the operating voltage of the high-voltage generator with regard to the articles.
Inventors
- 👤 Peter Ribnitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10; B; B05; B05B; B05B5/00; B05B5/08; B05B5/10; G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
An apparatus for coating articles by means of electrostatically charged particles, comprising at least two electrodes operatively associated with an atomizer nozzle for the particles, a regulaTable high-voltage generator for delivering to both electrodes a respective potential of different magnitude but the same sign, the improvement comprising a stabilizing stage provided between the high-voltage generator and the electrodes, said stabilizing stage maintaining substantially constant at a predetermined value the potential difference between the electrodes over the entire regulation range of the operating voltage of the high-voltage generator with regard to the articles.
Claim 2
Independent Claim
92 words
An apparatus for coating articles by means of electrostatically charged particles, comprising at least two electrodes operatively associated with an atomizer nozzle for the particles, a regulaTable high-voltage generator for delivering to both electrodes a respective potential of different magnitude but the same sign, the improvement comprising a stabilizing stage provided between the high-voltage generator and the electrodes, said stabilizing stage maintaining substantially constant at a predetermined value the potential difference between the electrodes over the entire regulation range of the operating voltage of the high-voltage generator with regard to the articles.
Claim 3
Dependent Claim
31 words
The apparatus as defined in claim 1, wherein said stabilizing stage contains a diode operating in the cut-off range and the breakdown voltage of which essentially corresponds to said predetermined value.
Claim 4
Dependent Claim
33 words
The apparatus as defined in claim 2, wherein said high-voltage generator is provided with a circuit arrangement having two different stages connected with the electrodes, said diode bridging both of said different stages.
Claim 5
Dependent Claim
16 words
The apparatus as defined in claim 3, wherein said circuit arrangement defines a voltage divider-circuit arrangement.
Claim 6
Dependent Claim
16 words
The apparatus as defined in claim 3, wherein said circuit arrangement defines a voltage multiplying-circuit arrangement.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |