Patent US3211917A successfully refreshed from Google Patents.
US3211917A
Expired / Lapsed
US
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Static control system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-01-30
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Granted: 1965-10-12
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Expires: 1981-01-30
Abstract
No abstract record available.
Inventors
- 👤 Harold D Ervin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:01
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A STATIC CONTROL SYSTEM COMPRISING: SUBSTANTIALLY SQUARE-LOOP CHARACTERISTIC CORE MEANS; AN ALTERNATING CURRENT SOURCE; MAGNETIZING MEANS INDUCTIVELY COUPLED TO SAID CORE MEANS AND CONNECTED TO SAID ALTERNATING CURRENT SOURCE FOR DRIVING SAID CORE MEANS TO SATURATION IN A SELECTED POLARITY FOLLOWING A SELECTED TIME PERIOD; SAID MAGNETIZING MEANS INCLUDING CONTROL MEANS FOR PROVIDING THE SELECTED TIME PERIOD THROUGH ATTENUATING ONE HALFCYCLE WITH RESPECT TO THE OTHER HALF-CYCLE OF EACH CYCLE OF THE ALTERNATING CURRENT APPLIED TO SAID MAGNETIZING MEANS; OUTPUT MEANS CONNECTED TO RESPOND TO SAID CORE MEANS SATURATION FOR PROVIDING AN OUTPUT VOLTAGE CHANGE IN RESPONSE O SATURATION OF SAID CORE MEANS; AND RESET MEANS FOR REMOVING SAID CORE MEANS FROM SAID SELECTED POLARITY SATURATION, SAID RESET MEANS INCLUDING A CAPACITOR DISCHARGE CIRCIT FOR PROVIDING A RESET CURRENT OF A POLARITY AND MAGNITUDE SUFFICIENT FOR RESETTING SAID CORE MEANS TO AN UNSATURATED CONDITION.
Claim 2
Dependent Claim
144 words
A STATIC CONTROL SYSTEM COMPRISING: SUBSTANTIALLY SQUARE-LOOP CHARACTERISTIC CORE MEANS; AN ALTERNATING CURRENT SOURCE; MAGNETIZING MEANS INDUCTIVELY COUPLED TO SAID CORE MEANS AND CONNECTED TO SAID ALTERNATING CURRENT SOURCE FOR DRIVING SAID CORE MEANS TO SATURATION IN A SELECTED POLARITY FOLLOWING A SELECTED TIME PERIOD; SAID MAGNETIZING MEANS INCLUDING CONTROL MEANS FOR PROVIDING THE SELECTED TIME PERIOD THROUGH ATTENUATING ONE HALFCYCLE WITH RESPECT TO THE OTHER HALF-CYCLE OF EACH CYCLE OF THE ALTERNATING CURRENT APPLIED TO SAID MAGNETIZING MEANS; OUTPUT MEANS CONNECTED TO RESPOND TO SAID CORE MEANS SATURATION FOR PROVIDING AN OUTPUT VOLTAGE CHANGE IN RESPONSE O SATURATION OF SAID CORE MEANS; AND RESET MEANS FOR REMOVING SAID CORE MEANS FROM SAID SELECTED POLARITY SATURATION, SAID RESET MEANS INCLUDING A CAPACITOR DISCHARGE CIRCIT FOR PROVIDING A RESET CURRENT OF A POLARITY AND MAGNITUDE SUFFICIENT FOR RESETTING SAID CORE MEANS TO AN UNSATURATED CONDITION.
References Cited (Backward Citations)
US2886801A
Cited
US2980846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |