US3109133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensating apparatus for frequency sensitive regulators
Assignee: AT&T Inc
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Filing: 1961-09-29
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Granted: 1963-10-29
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 John K Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:57
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3385; H02M3/3387
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
IN COMBINATION, A SOURCE OF DIRECT-CURENT ENERGY, AN INVERTER FOR CONVERTING SAID DIRECT-CURRENT ENERGY INTO ALTERNATING-CURRENT ENERGY, SAID INVERTER BEING PROVIDED WITH A SATURABLE CORE INDUCTOR THE INDUCTANCE OF WHICH IN PART DETERMINES THE FREQUENCY OF SAID ALTERNATINGCURRENT ENERGY, A RECTIFIER HAVING AN INPUT AND AN OUTPUT, A FERRO-RESONANT REGULATOR CONNECTED BETWEEN SAID INVETER AND THE INPUT OF SAID RECTIFIER FOR APPLYING AN ALTERNATING-CURRENT VOLTAGE TO SAID RECTIFIER, A LOAD CONNECTED TO THE OUTPUT OF SAID RECTIFIER SUCH THAT A DIRECT-CURRENT VOLTAGE IS SUPPLIED ACROSS SAID LOAD, A SOURCE OF A REFERENCE VOLTAGE, MEANS TO GENERATE A CONTROL VOLTAGE HAVING A MAGNITUDE RELATED TO THE DIFFERENCE BETWEEN THE MAGNITUDE OF SAID REFERENCE VOLTAGE AND THE VOLTAGE ACROSS SAID LOAD, AND MEANS FOR VARYING THE DEGREE OF SATURATION
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |