US3202903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tap changing voltage regulator
Assignee: McGraw Edison Co
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Filing: 1961-11-01
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Granted: 1965-08-24
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 Richard E Riebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
H; H02; H02H; H02H11/00; H02H11/006; H02H11/007; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/14; G05F1/147; G05F1/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A DEVICE FOR CONTROLLING THE VOLTAGE IN AN ELECTRICAL SYSTEM, HAVING A TRANSFORMER AND A TAP CHANGER, SAID DEVICE INCLUDING SENSING MEANS CONNECTED TO SAID SYSTEM FOR SENSING THE VOLTAGE THEREIN, FIRST CIRCUIT MEANS CON-L NECTED TO SAID SENSING MEANS FOR PASSING AN ELECTRIC CURRENT WHEN SAID SYSTEM VOLTAGE FFALLS BELOW A PREDETERMINED RANGE OF VALUES, SECOND CIRCUIT MEANS CONNECTED TO SAID SENSING MEANS FOR PASSING AN ELECTRIC CURRENT WHEN SAID SYSTEM VOLTAGE RISES ABOVE SAID RANGE OF VALUES, A FIRST SILICON CONTROLLED RECTIFIER HAVING ITTS GATE ELECTRODE CONNECTED TO SAID FIRST CIRCUIT MEANS, A SECOND SILICON CONTROLLED RECTIFIER HAVING ITS GATE ELECTRODE CONNECTED TO SAID SECOND CIRCUIT MEANS, AND REVERSIBLE MOTOR MEANS HAVING A PAIR OF OPPOSITELY ORIENTED WINDINGS FOR ACTUATING SAID TAP CHANGER TO RESTORE SAID QUANTITY TO SAID RANGE OF VALUES, THE ANODE AND CATHODE OF EACH OF SAID SILICON CONTROLLED RECTIFIERS NORMALLY OPEN CIRCUITING ONE OF SAID WINDINGS.
Claim 2
Independent Claim
152 words
A DEVICE FOR CONTROLLING THE VOLTAGE IN AN ELECTRICAL SYSTEM, HAVING A TRANSFORMER AND A TAP CHANGER, SAID DEVICE INCLUDING SENSING MEANS CONNECTED TO SAID SYSTEM FOR SENSING THE VOLTAGE THEREIN, FIRST CIRCUIT MEANS CON-L NECTED TO SAID SENSING MEANS FOR PASSING AN ELECTRIC CURRENT WHEN SAID SYSTEM VOLTAGE FFALLS BELOW A PREDETERMINED RANGE OF VALUES, SECOND CIRCUIT MEANS CONNECTED TO SAID SENSING MEANS FOR PASSING AN ELECTRIC CURRENT WHEN SAID SYSTEM VOLTAGE RISES ABOVE SAID RANGE OF VALUES, A FIRST SILICON CONTROLLED RECTIFIER HAVING ITTS GATE ELECTRODE CONNECTED TO SAID FIRST CIRCUIT MEANS, A SECOND SILICON CONTROLLED RECTIFIER HAVING ITS GATE ELECTRODE CONNECTED TO SAID SECOND CIRCUIT MEANS, AND REVERSIBLE MOTOR MEANS HAVING A PAIR OF OPPOSITELY ORIENTED WINDINGS FOR ACTUATING SAID TAP CHANGER TO RESTORE SAID QUANTITY TO SAID RANGE OF VALUES, THE ANODE AND CATHODE OF EACH OF SAID SILICON CONTROLLED RECTIFIERS NORMALLY OPEN CIRCUITING ONE OF SAID WINDINGS.
References Cited (Backward Citations)
US2913657A
Cited
US3018432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |