Patent US3138753A successfully refreshed from Google Patents.
US3138753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic amplifier with shunt reset circuit
Assignee: Magnetics Inc
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Filing: 1961-03-24
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Granted: 1964-06-23
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Paul W Covert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
H; H03; H03F; H03F9/00; H03F9/02; H03F9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A LEAKAGE RESET MAGNETIC AMPLIFIER CIRCUIT COMPRISING REACTOR-RECTIFIER CIRCUIT MEANS INCLUDING A PAIR OF SATURABLE CORES AND A PAIR OF CIRCUIT ARMS, EACH CIRCUIT ARM INCLUDING A FIRST WINDING MEANS WHICH IS WOUND ON ONE OF THE SATURABLE CORES AND CONNECTED IN SERIES WITH A RECTIFIER MEANS, MEANS FOR CONNECTING THE REACTOR-RECTIFIER CIRCUIT MEANS TO AN A.C. SOURCE AND LOAD MEANS SO THAT EACH CIRCUIT ARM CONDUCTS LOAD CURRENT IN ALTERNATE HALF CYCLES OF THE A.C. SOURCE, SEMI-CONDUCTOR MEANS SHUNTING EACH RECTIFIER MEANS TO PROVIDE A CURRENT PATH FOR RESETTING FLUX LEVEL IN EACH SATURABLE CORE DURING THE NON-CONDUCTIVE HALF CYCLE OF EACH RECTIFIER MEANS, AND CLOSED CIRCUIT MEANS INCLUDING SECOND WINDING MEANS MAGNETICALLY COUPLING BOTH SATURABLE CORES TO INDUCE A BUCKING VOLTAGE IN THE FIRST WINDING MEANS DURING FLUX LEVEL RESET OF THE SATURABLE CORE LINKED BY SUCH FIRST WINDING MEANS.
Claim 2
Dependent Claim
142 words
A LEAKAGE RESET MAGNETIC AMPLIFIER CIRCUIT COMPRISING REACTOR-RECTIFIER CIRCUIT MEANS INCLUDING A PAIR OF SATURABLE CORES AND A PAIR OF CIRCUIT ARMS, EACH CIRCUIT ARM INCLUDING A FIRST WINDING MEANS WHICH IS WOUND ON ONE OF THE SATURABLE CORES AND CONNECTED IN SERIES WITH A RECTIFIER MEANS, MEANS FOR CONNECTING THE REACTOR-RECTIFIER CIRCUIT MEANS TO AN A.C. SOURCE AND LOAD MEANS SO THAT EACH CIRCUIT ARM CONDUCTS LOAD CURRENT IN ALTERNATE HALF CYCLES OF THE A.C. SOURCE, SEMI-CONDUCTOR MEANS SHUNTING EACH RECTIFIER MEANS TO PROVIDE A CURRENT PATH FOR RESETTING FLUX LEVEL IN EACH SATURABLE CORE DURING THE NON-CONDUCTIVE HALF CYCLE OF EACH RECTIFIER MEANS, AND CLOSED CIRCUIT MEANS INCLUDING SECOND WINDING MEANS MAGNETICALLY COUPLING BOTH SATURABLE CORES TO INDUCE A BUCKING VOLTAGE IN THE FIRST WINDING MEANS DURING FLUX LEVEL RESET OF THE SATURABLE CORE LINKED BY SUCH FIRST WINDING MEANS.
References Cited (Backward Citations)
US2275308A
Cited
US2783315A
Cited
US2807776A
Cited
US2855560A
Cited
US2770770A
Cited
US2902547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |