US3072838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic amplifier system
Assignee: Motors Liquidation Co
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Filing: 1960-04-08
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Granted: 1963-01-08
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Expires: 1980-04-08
Abstract
No abstract record available.
Inventors
- 👤 Lewis R Hetzler
- 👤 David J Hartman
- 👤 Gerald O Huntzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
H; H02; H02P; H02P13/00; H02P13/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
AN ELECTRIC CIRCUIT FOR PROVIDING A DIRECT CURRENT VOLTAGE WHICH IS CONTROLLABLE BOTH AS TO POLARITY AND MAGNITUDE COMPRISING, A SOURCE OF A.C. VOLTAGE INCLUDING A COIL WINDING HAVING A CENTER TAP, FIRST AND SECOND MAGNETIC AMPLIFIER MEANS, FIRST AND SECOND FULL WAVE RECTIFIER MEANS, FIRST AND SECOND TRANSISTORS, A DIRECT CURRENT LOAD, A FIRST ENERGIZING CIRCUIT FOR SAID DIRECT CURRENT LOAD INCLUDING SAID COIL WINDING, SAID FIRST MAGNETIC AMPLIFIER MEANS, SAID FIRST RECTIFIER MEANS AND THE EMITTER-COLLECTOR CIRCUIT OF SAID FIRST TRANSISTOR, A SECOND ENERGIZING CIRCUIT FOR SAID DIRECT CURRENT LOAD INCLUDING SAID COIL WINDING, SAID SECOND MAGNETIC AMPLIFIER MEANS, SAID SECOND RECTIFIER MEANS AND THE EMITTER-COLLECTOR CIRCUIT OF SAID SECOND TRANSISTOR, SAID TRANSISTORS HAVING THEIR EMITTER-COLLECTOR CIRCUITS CONNECTED BETWEEN SAID CENTER TAP AND OPPOSITE SIDES OF SAID DIRECT CURRENT LOAD, A FIRST DIODE CONNECTING THE EMITTER AND BASE ELECTRODES OF SAID FIRST TRANSISTOR AND
References Cited (Backward Citations)
US2798904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |