Patent US3275838A successfully refreshed from Google Patents.
US3275838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for regulating transmitted power between two asynchronously connected electric alternating current grids
Assignee: ABB Norden Holding AB
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Filing: 1963-04-02
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Granted: 1966-09-27
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Expires: 1983-04-02
Abstract
No abstract record available.
Inventors
- 👤 Almstrom Knut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:59
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/36; Y; Y02; Y02E; Y02E60/00; Y02E60/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
DEVICE FOR REGULATING THE TRANSMITTED POWER BETWEEN TWO ELECTRIC ALTERNATING CURRENT GRIDS, WHICH GRIDS EACH CONTAIN LOADING OBJECTS AND POWER GENERATORS WHICH DETERMINE THE FREQUENCY OF THE GRID, AND WHICH GRIDS ARE CONNECTED TOGETHER VIA A LINK WHICH PERMITS THE FREQUENCIES OF THE GRIDS TO BE VARIED INDEPENDENTLY OF EACH OTHER WHICH LINK CONTAINS ONE CONVERTER CONNECTED TO ONE OF THE GRIDS AND ONE CONNECTED TO THE OTHER, CHARACTERIZED IN THAT AT LEAST ONE OF THE CONVERTERS IS EQUIPPED WITH A REGULATOR WHICH INFLUENCES THE TRANSMITTING POWER OF THE CONVERTER
Claim 2
Dependent Claim
90 words
DEVICE FOR REGULATING THE TRANSMITTED POWER BETWEEN TWO ELECTRIC ALTERNATING CURRENT GRIDS, WHICH GRIDS EACH CONTAIN LOADING OBJECTS AND POWER GENERATORS WHICH DETERMINE THE FREQUENCY OF THE GRID, AND WHICH GRIDS ARE CONNECTED TOGETHER VIA A LINK WHICH PERMITS THE FREQUENCIES OF THE GRIDS TO BE VARIED INDEPENDENTLY OF EACH OTHER WHICH LINK CONTAINS ONE CONVERTER CONNECTED TO ONE OF THE GRIDS AND ONE CONNECTED TO THE OTHER, CHARACTERIZED IN THAT AT LEAST ONE OF THE CONVERTERS IS EQUIPPED WITH A REGULATOR WHICH INFLUENCES THE TRANSMITTING POWER OF THE CONVERTER
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |