US3257597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical converter speed control system
Assignee: General Electric Co
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Filing: 1963-12-13
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Granted: 1966-06-21
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Earnest F Weiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
B; B60; B60L; B60L9/00; B60L9/02; B60L9/08; B60L9/12; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913; Y10S388/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A CONTROL SYSTEM FOR REGULATING THE D.-C. VOLTAGE APPLIED TO D.-C. MOTOR SYSTEM FROM AN A.-C. SOURCE COMPRISING: (A) MEANS CONNECTABLE TO SUCH A.-C. SOURCE FOR ESTABLISHING A PLURALITY OF D.-C. VOLTAGE BLOCKS REPRESENTING INCREMENTS OF D.-C. VOLTAGE TO BE APPLIED TO THE POWER CIRCUIT OF SAID MOTOR SYSTEM, (B) AT LEAST ONE OF SAID BLOCKS BEING AN ADJUSTABLE VOLTAGE BLOCK INCLUDING PHASE CONTROLLED IMPEDANCE MEANS FOR REGULATING THE OUTPUT D.-C. VOLTAGE MAGNITUDE OF SAID BLOCK OVER A PRESELECTED RANGE IN RESPONSE TO ADJUSTMENT OF SUCH PHASE CONTROLLED IMPEDANCE MEANS, (C) MEANS FOR SEQUENTIALLY SWITCHING SAID D.-C. VOLTAGE BLOCKS INTO AND OUT OF THE POWER CIRCUIT OF SAID D.-C. MOTORS TO CONTROL THE D.-C. VOLTAGE APPLIED TO SAID MOTOR SYSTEM, AND (D) MEANS RESPONSIVE TO SAID SWITCHING ACTION FOR AUTOMATICALLY ADJUSTING SAID ADJUSTABLE VOLTAGE BLOCK BACK TO A PRESELECTED REDUCED VOLTAGE LEVEL TO PERMIT MODULATION OF SAID ADJUSTABLE VOLTAGE BLOCK TO BE INITIATED AT SAID REDUCED VOLTAGE LEVEL UPON THE SWITCHING OF AN ADDITIONAL VOLTAGE BLOCK INTO THE POWER CIRCUIT OF SAID MOTOR SYSTEM.
Claim 2
Dependent Claim
174 words
A CONTROL SYSTEM FOR REGULATING THE D.-C. VOLTAGE APPLIED TO D.-C. MOTOR SYSTEM FROM AN A.-C. SOURCE COMPRISING: (A) MEANS CONNECTABLE TO SUCH A.-C. SOURCE FOR ESTABLISHING A PLURALITY OF D.-C. VOLTAGE BLOCKS REPRESENTING INCREMENTS OF D.-C. VOLTAGE TO BE APPLIED TO THE POWER CIRCUIT OF SAID MOTOR SYSTEM, (B) AT LEAST ONE OF SAID BLOCKS BEING AN ADJUSTABLE VOLTAGE BLOCK INCLUDING PHASE CONTROLLED IMPEDANCE MEANS FOR REGULATING THE OUTPUT D.-C. VOLTAGE MAGNITUDE OF SAID BLOCK OVER A PRESELECTED RANGE IN RESPONSE TO ADJUSTMENT OF SUCH PHASE CONTROLLED IMPEDANCE MEANS, (C) MEANS FOR SEQUENTIALLY SWITCHING SAID D.-C. VOLTAGE BLOCKS INTO AND OUT OF THE POWER CIRCUIT OF SAID D.-C. MOTORS TO CONTROL THE D.-C. VOLTAGE APPLIED TO SAID MOTOR SYSTEM, AND (D) MEANS RESPONSIVE TO SAID SWITCHING ACTION FOR AUTOMATICALLY ADJUSTING SAID ADJUSTABLE VOLTAGE BLOCK BACK TO A PRESELECTED REDUCED VOLTAGE LEVEL TO PERMIT MODULATION OF SAID ADJUSTABLE VOLTAGE BLOCK TO BE INITIATED AT SAID REDUCED VOLTAGE LEVEL UPON THE SWITCHING OF AN ADDITIONAL VOLTAGE BLOCK INTO THE POWER CIRCUIT OF SAID MOTOR SYSTEM.
References Cited (Backward Citations)
US2611117A
Cited
US3128422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |