US3215893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode gaseous rectifier tube
Assignee: Thales SA
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Filing: 1960-11-04
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Granted: 1965-11-02
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Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Boucher Gilbert
- 👤 Soulet Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:23
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/14; H01J17/04; H01J17/06; H01J17/066; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN ELECTRIC CURRENT VALVE COMPRISING A PAIR OF PLANAR ESSENTIALLY PARALLEL MUTUALLY FACING ELECTRODES, A RELATIVELY LOW PRESSURE GAS IN THE SPACE BETWEEN SAID ELECTRODES, MEANS FOR ESTABLISHING IN SAID SPACE AN ELECTRIC FILED OF A PREDETERMINED STRENGTH AND DIRECTION WHEREBY ONE OF SAID ELECTRODES OPERATES AS AN ANODE AND THE OTHER AS COLD EMISSIVE CATHODE, AND MAGNETIC FIELD GENERATING MEANS FOR GENERATING IN SAID SPACE A MAGNETIC FIELD HAVING AT LEAST A COMPONENT ESSENTIALLY PARALLEL TO THE SURFACES OF SAID ELECTRODES AND VARYING IN STRENGTH IN THE DIRECTION PERPENDICULAR TO SAID SURFACES SO THAT THE STRENGTH OF SAID COMPONENT IS LARGER NEAR ONE OF SAID ELECTRODES THAN NEAR THE OTHER, SAID MAGNETIC FIELD GENERATING MEANS COMPRISING A LATTICE OF FERRITE CUBES LOCATED OUTSIDE OF SAID SPACE NEAR THE SURFACE OF ONE OF SAID ELECTRODES AND HAVING FACES TURNED TOWARDS SAID SURFACE WITH ALTERNATE POLARITIES FOR EACH PAIR OF SUCCESSIVE ADJACENT CUBES.
Claim 2
Dependent Claim
152 words
AN ELECTRIC CURRENT VALVE COMPRISING A PAIR OF PLANAR ESSENTIALLY PARALLEL MUTUALLY FACING ELECTRODES, A RELATIVELY LOW PRESSURE GAS IN THE SPACE BETWEEN SAID ELECTRODES, MEANS FOR ESTABLISHING IN SAID SPACE AN ELECTRIC FILED OF A PREDETERMINED STRENGTH AND DIRECTION WHEREBY ONE OF SAID ELECTRODES OPERATES AS AN ANODE AND THE OTHER AS COLD EMISSIVE CATHODE, AND MAGNETIC FIELD GENERATING MEANS FOR GENERATING IN SAID SPACE A MAGNETIC FIELD HAVING AT LEAST A COMPONENT ESSENTIALLY PARALLEL TO THE SURFACES OF SAID ELECTRODES AND VARYING IN STRENGTH IN THE DIRECTION PERPENDICULAR TO SAID SURFACES SO THAT THE STRENGTH OF SAID COMPONENT IS LARGER NEAR ONE OF SAID ELECTRODES THAN NEAR THE OTHER, SAID MAGNETIC FIELD GENERATING MEANS COMPRISING A LATTICE OF FERRITE CUBES LOCATED OUTSIDE OF SAID SPACE NEAR THE SURFACE OF ONE OF SAID ELECTRODES AND HAVING FACES TURNED TOWARDS SAID SURFACE WITH ALTERNATE POLARITIES FOR EACH PAIR OF SUCCESSIVE ADJACENT CUBES.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |