Patent US3581148A successfully refreshed from Google Patents.
US3581148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current static transformer
Assignee: Individual
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Filing: 1969-06-04
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Granted: 1971-05-25
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Expires: 1989-06-04
Abstract
Abstract A direct current static transformer for continuous operation comprising a series of successive stages each including a first conductive plate having a multiplicity of thin, needlelike individual electrodes directed toward a second conductive plate, the second conductive plate having a relatively smooth surface facing toward the needle electrodes. Each stage further includes an electrically conductive grid interposed between the first and second plates, the grid being electrically connected to the first plate. The second plate for one stage constitutes the first plate for the next succeeding stage in the transformer. In a preferred construction, there are two such series of successive stages, one series connected to the positive terminal of a DC supply and the other series connected to the negative terminal, with a capacitor connected between the corresponding plates of the two series in each stage.
Inventors
- 👤 Roger Raoul Brignet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:19
CPC Classifications
H; H01; H01T; H01T11/00; H01T14/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
260 words
A direct current static transformer for continuous voltage transformation operation comprising: a first series of transformation stages, each transformation stage including: a first electrically conductive plate of substantial surface area, a second electrically coNductive plate of corresponding surface area disposed in parallel spaced relation to said first plate, a multiplicity of pointed, needlelike electrodes of given length each affixed to said first plate in electrically conductive contact therewith and extending from said first plate toward said second plate, and a conductive grid, interposed between said plates in spaced relation to the free ends of the needle electrodes and to the second plate, said grid being electrically conductively connected to said first plate, the second plate in each stage being electrically conductively connected to the first plate in the succeeding stage in each series; a second series of transformation stages, equal in number and corresponding in construction to the stages in the first series; a first pair of terminals, each connected to the first plate in the first stage of a respective one of said series; and a second pair of terminals, each connected to the second plate in the last stage of a respective one of said series; said transformer operating as a step-up transformer when a direct current supply is connected between said first pair of terminals and a load is connected between said second pair of terminals, said transformer operating as a step-down transformer when a direct current supply is connected between said second pair of terminals and a load is connected between said first pair of terminals.
Claim 2
Dependent Claim
260 words
A direct current static transformer for continuous voltage transformation operation comprising: a first series of transformation stages, each transformation stage including: a first electrically conductive plate of substantial surface area, a second electrically coNductive plate of corresponding surface area disposed in parallel spaced relation to said first plate, a multiplicity of pointed, needlelike electrodes of given length each affixed to said first plate in electrically conductive contact therewith and extending from said first plate toward said second plate, and a conductive grid, interposed between said plates in spaced relation to the free ends of the needle electrodes and to the second plate, said grid being electrically conductively connected to said first plate, the second plate in each stage being electrically conductively connected to the first plate in the succeeding stage in each series; a second series of transformation stages, equal in number and corresponding in construction to the stages in the first series; a first pair of terminals, each connected to the first plate in the first stage of a respective one of said series; and a second pair of terminals, each connected to the second plate in the last stage of a respective one of said series; said transformer operating as a step-up transformer when a direct current supply is connected between said first pair of terminals and a load is connected between said second pair of terminals, said transformer operating as a step-down transformer when a direct current supply is connected between said second pair of terminals and a load is connected between said first pair of terminals.
Claim 3
Dependent Claim
108 words
A direct current static transformer according to Claim 1, in which the second conductive plate of the first stage in each series is provided with a multiplicity of pointed, needlelike electrodes projecting from the surface thereof opposite said conductive grid of said first stage, so that said second plate of said first stage comprises the first plate for the second stage in the series, and in which a similar construction is carried through the remaining stages in each series, with each stage in each series including at least one plate that serves as an input plate for one stage and an output plate for the next adjacent stage.
Claim 4
Dependent Claim
42 words
A direct current static transformer according to Claim 2, and further comprising a plurality of capacitors, each electrically connected between a respective plate in the first series of transformation stages and the corresponding plate in the corresponding stage of the second series.
Claim 5
Dependent Claim
62 words
A direct current static transformer according to Claim 1 in which all of said transformation stages are immersed in a rarefied inert gas atmosphere of low pressure such that the mean free path of ions moving in said atmosphere is of the same order of magnitude as the spacing between the second conductive plate and the tip ends of the needle electrodes.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |