Patent US3115600A successfully refreshed from Google Patents.
US3115600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching regulator
Assignee: AT&T Inc
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Filing: 1961-09-29
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Granted: 1963-12-24
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Brolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/1563
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A REGULATOR CIRCUIT COMPRISING A TRANSISTOR HAVING BASE, COLLECTOR, AND EMITTER ELECTRODES, A TRANSFORMER HAVING A PLURALITY OF WINDINGS, A SOURCE OF DIRECT-CURRENT POTENTIAL, A LOAD, MEANS FOR SERIALLY CONNECTING SAID SOURCE, SAID LOAD, SAID EMITTER AND COLLECTOR ELECTRODES AND ONE OF SAID PLURALITY OF WINDINGS, NONLINEAR IMPEDANCE MEANS, MEANS FOR SERIALLY CONNECTING SAID EMITTER ELECTRODE, ANOTHER OF SAID PLURALITY OF WINDINGS, SAID NONLINEAR IMPEDANCE MEANS AND SAID BASE ELECTRODE, A TRANSISTOR PROTECTION NETWORK COMPRISING A CAPACITOR, AN ASYMMETRICALLY CONDUCTING DEVICE AND A RESISTOR, MEANS FOR SERIALLY CONNECTING SAID CAPACITOR, SAID ASYMMETRICALLY CONDUCTING DEVICE AND SAID LOAD, AND MEANS FOR CONNECTING SAID RESISTOR ACROSS SAID ASYMMETRICALLY CONDUCTING DEVICE.
Claim 2
Dependent Claim
108 words
A REGULATOR CIRCUIT COMPRISING A TRANSISTOR HAVING BASE, COLLECTOR, AND EMITTER ELECTRODES, A TRANSFORMER HAVING A PLURALITY OF WINDINGS, A SOURCE OF DIRECT-CURRENT POTENTIAL, A LOAD, MEANS FOR SERIALLY CONNECTING SAID SOURCE, SAID LOAD, SAID EMITTER AND COLLECTOR ELECTRODES AND ONE OF SAID PLURALITY OF WINDINGS, NONLINEAR IMPEDANCE MEANS, MEANS FOR SERIALLY CONNECTING SAID EMITTER ELECTRODE, ANOTHER OF SAID PLURALITY OF WINDINGS, SAID NONLINEAR IMPEDANCE MEANS AND SAID BASE ELECTRODE, A TRANSISTOR PROTECTION NETWORK COMPRISING A CAPACITOR, AN ASYMMETRICALLY CONDUCTING DEVICE AND A RESISTOR, MEANS FOR SERIALLY CONNECTING SAID CAPACITOR, SAID ASYMMETRICALLY CONDUCTING DEVICE AND SAID LOAD, AND MEANS FOR CONNECTING SAID RESISTOR ACROSS SAID ASYMMETRICALLY CONDUCTING DEVICE.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |