US3195032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing system for synchronous motor or generator
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1961-05-25
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Granted: 1965-07-13
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Expires: 1981-05-25
Abstract
No abstract record available.
Inventors
- 👤 John R Shonnard
- 👤 Robert L Easson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:59
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H02; H02P; H02P25/00; H02P25/02; H02P25/022; H02P25/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A STABILIZING SYSTEM FOR A SYNCHRONOUS MOTOR HAVING A ROTOR, A STATOR AND STATOR WINDINGS TO PRODUCE A ROTATING FIELD COUPLED TO SAID ROTOT, A SOURCE OF CURRENT FOR SAID MOTOR, LINE CONDUCTORS CONNECTING SAID SOURCE TO SAID STATOR WINDINGS, A TRANSFORMER HAVING A PRIMARY WINDING IN SERIES RELATION WITH ONE OF SAID LINE CONDUCTORS AND A SECONDARY WINDING INDUCTIVELY COUPLED TO SAID PRIMARY WINDING, RECTIFYING MEANS CONNECTED TO SAID SECONDARY WINDING FOR DERIVING A CONTROL POTENTIAL WHICH VARIES WITH CHANGES IN THE AMPLITUDE OF THE CURRENT IN SAID PRIMARY WINDING OF THE TRANFORMER, ANTI-HUNTING MEANS FOR MINIMIZING OSCILLATIONS OF SAID ROTOR CONTROLLED BY SAID CONTROL POTENTIAL AND A LOW PASS FILTER CONNECTED BETWEEN SAID RECTIFYING MEANS AND SAID ANTI-HUNTING MEANS, SAID LOW PASS FILTER INCLUDING MEANS AND RECTIFYING MEANS.
Claim 2
Dependent Claim
131 words
IN A STABILIZING SYSTEM FOR A SYNCHRONOUS MOTOR HAVING A ROTOR, A STATOR AND STATOR WINDINGS TO PRODUCE A ROTATING FIELD COUPLED TO SAID ROTOT, A SOURCE OF CURRENT FOR SAID MOTOR, LINE CONDUCTORS CONNECTING SAID SOURCE TO SAID STATOR WINDINGS, A TRANSFORMER HAVING A PRIMARY WINDING IN SERIES RELATION WITH ONE OF SAID LINE CONDUCTORS AND A SECONDARY WINDING INDUCTIVELY COUPLED TO SAID PRIMARY WINDING, RECTIFYING MEANS CONNECTED TO SAID SECONDARY WINDING FOR DERIVING A CONTROL POTENTIAL WHICH VARIES WITH CHANGES IN THE AMPLITUDE OF THE CURRENT IN SAID PRIMARY WINDING OF THE TRANFORMER, ANTI-HUNTING MEANS FOR MINIMIZING OSCILLATIONS OF SAID ROTOR CONTROLLED BY SAID CONTROL POTENTIAL AND A LOW PASS FILTER CONNECTED BETWEEN SAID RECTIFYING MEANS AND SAID ANTI-HUNTING MEANS, SAID LOW PASS FILTER INCLUDING MEANS AND RECTIFYING MEANS.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |