US3089984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignitron excitation control circuit
Assignee: WALLSON ASSOCIATES
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Filing: 1960-12-20
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Granted: 1963-05-14
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Randolph Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:51
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A CONTROL CIRCUIT COMPRISING A FIRST SOURCE OF ALTERNATING VOLTAGE, A LOAD, AN IGNITRON HAVING PLATE, CATHODE AND IGNITER ELECTRODES, SAID LOAD BEING SERIALY COUPLED WITH THE PLATE AND CATHODE ELECTRODES OF SAID IGNITRON ACROSS SAID FIRST SOURCE, A SECOND SOURCE OF ALTERNATING VOLTAGE, A CONTROLLED RECTIFIER HAVING A GATE ELECTRODE COUPLING SAID SECOND SOURCE BETWEEN SAID CATHODE AND IGNITER ELECTRODES OF SAID IGNITRON, AND MEANS FOR APPLYING A CONTROL VOLTAGE TO THE GATE ELECTRODE OF SAID RECTIFIER TO FIRE SAID RECTIFIER AT A PREDETERMINED POINT ON THE CYCLE OF THE
Claim 2
Dependent Claim
91 words
A CONTROL CIRCUIT COMPRISING A FIRST SOURCE OF ALTERNATING VOLTAGE, A LOAD, AN IGNITRON HAVING PLATE, CATHODE AND IGNITER ELECTRODES, SAID LOAD BEING SERIALY COUPLED WITH THE PLATE AND CATHODE ELECTRODES OF SAID IGNITRON ACROSS SAID FIRST SOURCE, A SECOND SOURCE OF ALTERNATING VOLTAGE, A CONTROLLED RECTIFIER HAVING A GATE ELECTRODE COUPLING SAID SECOND SOURCE BETWEEN SAID CATHODE AND IGNITER ELECTRODES OF SAID IGNITRON, AND MEANS FOR APPLYING A CONTROL VOLTAGE TO THE GATE ELECTRODE OF SAID RECTIFIER TO FIRE SAID RECTIFIER AT A PREDETERMINED POINT ON THE CYCLE OF THE
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |