US3254285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical machine
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1961-11-14
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Granted: 1966-05-31
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jotten Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:48
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/022; H02P25/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A CONTROL SYSTEM FOR A CONVERTER-FED MULTIPHASE MOTOR OF THE SHYNCHRONOUS MOTOR TYPE WHICH HAS RESPECTIVE PHASE COILS AND POLE GAPS AND IN WHICH THERE IS A REVOLVING FIELD AND IN WHICH EACH PHASE IS SUPPLIED WITH CURRENT INDEPENDENTLY OF THE OTHER PHASES THROUGH A STATIC CONVERTER ARRANGEMENT CAPABLE OF CARRYING CURRENT IN BOTH DIRECTIONS AND OF OPERATING AS A RECTIFIER OR INVERTER BY IGNITION ANGLE CONTROL, THE COMBINATON WHICH COMPRISES: (A) MEANS FOR VARYING THE IGNITION ANGLE IN RESPECT OF
Claim 2
Dependent Claim
82 words
IN A CONTROL SYSTEM FOR A CONVERTER-FED MULTIPHASE MOTOR OF THE SHYNCHRONOUS MOTOR TYPE WHICH HAS RESPECTIVE PHASE COILS AND POLE GAPS AND IN WHICH THERE IS A REVOLVING FIELD AND IN WHICH EACH PHASE IS SUPPLIED WITH CURRENT INDEPENDENTLY OF THE OTHER PHASES THROUGH A STATIC CONVERTER ARRANGEMENT CAPABLE OF CARRYING CURRENT IN BOTH DIRECTIONS AND OF OPERATING AS A RECTIFIER OR INVERTER BY IGNITION ANGLE CONTROL, THE COMBINATON WHICH COMPRISES: (A) MEANS FOR VARYING THE IGNITION ANGLE IN RESPECT OF
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |