US3324384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator with field resistance switching
Assignee: RETT ELECTRONICS Inc
•
Filing: 1963-07-29
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Granted: 1967-06-06
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Alois L Jokl
- 👤 Mandzyn Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/26; H02P9/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A CONTROL SYSTEM FOR A GENERATOR HAVING A FIELD COIL, COMPRISING: A SOURCE OF EXCITATION FOR SAID FIELD COIL; A FIXED RESISTOR CONNECTED IN SERIES WITH SAID FIELD COIL AND SAID SOURCE OF EXCITATION; A FIRST CONTROLLED RECTIFIER HAVING ITS ANODE-CATHODE PATH CONNECTED ACROSS THE RESISTOR; A FIRING CIRCUIT CONNECTED TO SAID RESISTOR AND TO THE GATE OF SAID FIRST CONTROLLED RECTIFIER OPERATIVE TO SENSE THE CURRENT FLOWING THROUGH SAID RESISTOR TO FIRE THE FIRST CONTROLLED RECTIFIER UPON THE CURRENT EXCEEDING A PREDETERMINED VALVE; A CAPACITOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL BEING CONNECTED TO THE ANODE OF SAID FIRST CONTROLLED RECTIFIER; A CHARGING CIRCUIT CONNECTED IN SERIES WITH THE CAPACITOR ACROSS THE FIELD COIL; AND SECOND CONTROLLED RECTIFIER ACROSS THE FIELD COIL; AND SECOND CONTROLLED OF THE CAPACITOR, AND ITS CATHODE CONNECTED TO THE CATHODE OF THE FIRST CONTROLLED RECTIFIER; AND A SECOND FIRING CIRCUIT
Claim 2
Dependent Claim
148 words
A CONTROL SYSTEM FOR A GENERATOR HAVING A FIELD COIL, COMPRISING: A SOURCE OF EXCITATION FOR SAID FIELD COIL; A FIXED RESISTOR CONNECTED IN SERIES WITH SAID FIELD COIL AND SAID SOURCE OF EXCITATION; A FIRST CONTROLLED RECTIFIER HAVING ITS ANODE-CATHODE PATH CONNECTED ACROSS THE RESISTOR; A FIRING CIRCUIT CONNECTED TO SAID RESISTOR AND TO THE GATE OF SAID FIRST CONTROLLED RECTIFIER OPERATIVE TO SENSE THE CURRENT FLOWING THROUGH SAID RESISTOR TO FIRE THE FIRST CONTROLLED RECTIFIER UPON THE CURRENT EXCEEDING A PREDETERMINED VALVE; A CAPACITOR HAVING FIRST AND SECOND TERMINALS, SAID FIRST TERMINAL BEING CONNECTED TO THE ANODE OF SAID FIRST CONTROLLED RECTIFIER; A CHARGING CIRCUIT CONNECTED IN SERIES WITH THE CAPACITOR ACROSS THE FIELD COIL; AND SECOND CONTROLLED RECTIFIER ACROSS THE FIELD COIL; AND SECOND CONTROLLED OF THE CAPACITOR, AND ITS CATHODE CONNECTED TO THE CATHODE OF THE FIRST CONTROLLED RECTIFIER; AND A SECOND FIRING CIRCUIT
References Cited (Backward Citations)
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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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |