Patent US3171073A successfully refreshed from Google Patents.
US3171073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo amplifier control system
Assignee: GEN ELECTRIC LAB Inc
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Filing: 1961-02-01
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Granted: 1965-02-23
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Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 William L Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
IN A POWER AMPLIFIER CONTROL CIRCUIT FOR CONTROLLING ALTERNATING CURRENT POWER FROM AN ALTERNATING CURRENT POWER SOURCE TO A SERVOMOTOR OF THE TYPE HAVING A PAIR OF FIELD CONTROL WINDINGS FOR ALTERNATING CURRENT POWER IN QUADRATURE VOLTAGE PHASE IN ONE WINDING WITH RESPECT TO THE OTHER WINDING, THE COMBINATION OF A PAIR OF DUTY CYCLE CONTROL CHANNELS, EACH COUPLED TO A RESPECTIVE ONE OF THE SERVO-MOTOR CONTROL WINDINGS, A MAGNETIC AMPLIFIER IN EACH OF THE DUTY CYCLE CHANNELS, A SCOTT T FORMATION COUPLED TO THE CHANNELS FOR APPLYING SAID ALTERNATING CURRENT POWER TO ONE OF THE CHANNELS IN QUADRATURE PHASE WITH RESPECT TO ALTERNATING CURRENT POWER APPLIED TO THE OTHER CHANNEL, ELECTRONIC VALVE MEANS IN EACH CHANNEL COUPLED TO THE MAGNETIC AMPLIFIER AND SCOTT T FORMATION FOR CONTROLLING THE MAGNITUDE OF ALTERNATING CURRENT POWER FLOW FROM THE ASSOCIATED CHANNEL TO THE CORRESPONDING FIELD CONTROL WINDING IN ACCORDANCE WITH MAGNETIC AMPLIFIER OUTPUT, A SATURABLE AMPLIFER COUPLED TO THE VALVE MEANS OF ONE OF THE CHANNELS AND THE CORRESPONDING FIELD WINDING OF THE SERVO-MOTOR, AND A MASTER CONTROL SIGNAL MEANS COUPLED TO THE MAGNETIC AMPLIFIERS AND SAID SATURABLE AMPLIFIER FOR CONTROLLING OUTPUT OF SAID MAGNETIC AMPLIFIERS AND SAID SATURABLE AMPLIFIER.
Claim 2
Dependent Claim
198 words
IN A POWER AMPLIFIER CONTROL CIRCUIT FOR CONTROLLING ALTERNATING CURRENT POWER FROM AN ALTERNATING CURRENT POWER SOURCE TO A SERVOMOTOR OF THE TYPE HAVING A PAIR OF FIELD CONTROL WINDINGS FOR ALTERNATING CURRENT POWER IN QUADRATURE VOLTAGE PHASE IN ONE WINDING WITH RESPECT TO THE OTHER WINDING, THE COMBINATION OF A PAIR OF DUTY CYCLE CONTROL CHANNELS, EACH COUPLED TO A RESPECTIVE ONE OF THE SERVO-MOTOR CONTROL WINDINGS, A MAGNETIC AMPLIFIER IN EACH OF THE DUTY CYCLE CHANNELS, A SCOTT T FORMATION COUPLED TO THE CHANNELS FOR APPLYING SAID ALTERNATING CURRENT POWER TO ONE OF THE CHANNELS IN QUADRATURE PHASE WITH RESPECT TO ALTERNATING CURRENT POWER APPLIED TO THE OTHER CHANNEL, ELECTRONIC VALVE MEANS IN EACH CHANNEL COUPLED TO THE MAGNETIC AMPLIFIER AND SCOTT T FORMATION FOR CONTROLLING THE MAGNITUDE OF ALTERNATING CURRENT POWER FLOW FROM THE ASSOCIATED CHANNEL TO THE CORRESPONDING FIELD CONTROL WINDING IN ACCORDANCE WITH MAGNETIC AMPLIFIER OUTPUT, A SATURABLE AMPLIFER COUPLED TO THE VALVE MEANS OF ONE OF THE CHANNELS AND THE CORRESPONDING FIELD WINDING OF THE SERVO-MOTOR, AND A MASTER CONTROL SIGNAL MEANS COUPLED TO THE MAGNETIC AMPLIFIERS AND SAID SATURABLE AMPLIFIER FOR CONTROLLING OUTPUT OF SAID MAGNETIC AMPLIFIERS AND SAID SATURABLE AMPLIFIER.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |