Patent US3334283A successfully refreshed from Google Patents.
US3334283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric starting system for synchronous motors
Assignee: Compagnie Electro Mecanique SA
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Filing: 1965-05-25
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Granted: 1967-08-01
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Hugot Andre Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:20
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/02; H02P; H02P1/00; H02P1/16; H02P1/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A SYNCHRONOUS MOTOR STARTING SYSTEM COMPRISING, IN COMBINATION: A FIRST, MAIN, SYNCHRONOUS MOTOR WHICH IS TO BE STARTED, SAID FIRST SYNCHRONOUS MOTOR HAVING STATOR FIELD WINDING MEANS AND A ROTOR; A SYNCHRONOUS ALTERNATOR HAVING STATOR OUTPUT WINDING MEANS AND A ROTOR; A SECOND, AUXILIARY, SYNCHRONOUS MOTOR HAVING STATOR FIELD WINDING MEANS AND A ROTOR; MEANS COUPLING TOGETHER THE ROTORS OF SAID FIRST AND SECOND SYNCHRONOUS MOTORS AND SAID SYNCHRONOUS ALTERNATOR; AND MEANS ELECTRICALLY CONNECTING THE STATOR OUTPUT WINDING OF SAID SYNCHRONOUS ALTERNATOR TO THE STATOR FIELD WINDING MEANS OF SAID SECOND SYNCHRONOUS MOTOR.
Claim 2
Dependent Claim
93 words
A SYNCHRONOUS MOTOR STARTING SYSTEM COMPRISING, IN COMBINATION: A FIRST, MAIN, SYNCHRONOUS MOTOR WHICH IS TO BE STARTED, SAID FIRST SYNCHRONOUS MOTOR HAVING STATOR FIELD WINDING MEANS AND A ROTOR; A SYNCHRONOUS ALTERNATOR HAVING STATOR OUTPUT WINDING MEANS AND A ROTOR; A SECOND, AUXILIARY, SYNCHRONOUS MOTOR HAVING STATOR FIELD WINDING MEANS AND A ROTOR; MEANS COUPLING TOGETHER THE ROTORS OF SAID FIRST AND SECOND SYNCHRONOUS MOTORS AND SAID SYNCHRONOUS ALTERNATOR; AND MEANS ELECTRICALLY CONNECTING THE STATOR OUTPUT WINDING OF SAID SYNCHRONOUS ALTERNATOR TO THE STATOR FIELD WINDING MEANS OF SAID SECOND SYNCHRONOUS MOTOR.
References Cited (Backward Citations)
US2993159A
Cited
US3091728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |