Patent US373849A successfully refreshed from Google Patents.
Patent US3287679A successfully refreshed from Google Patents.
US3287679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas insulated current transformer
Assignee: ABB Inc USA
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Filing: 1965-04-13
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Granted: 1966-11-22
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Jensen Otto
- 👤 Conangla Amado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN COMBINATION; A GROUNDED SEALED CONDUCTIVE HOUSING; A LEAD BUSHING EXTENDING THROUGH SAID CONDUCTIVE HOUSING; A COAXIAL CONDUCTOR EXTENDING THROUGH SAID LEAD BUSHING; A CURRENT TRANSFORMER WITHIN SAID GROUNDED HOUSING INSULATION SUPPORT MEANS CONNECTED BETWEEN SAID GROUNDED HOUSING AND SAID CURRENT TRANSFORMER FOR SUPPORTING SAID CURRENT TRANSFORMER WITHIN SAID GROUNDED HOUSING IN INSULATED RELATION WITH RESPECT TO SAID GROUNDED HOUSING; SAID CURRENT TRANSFORMER HAVING A TOROIDAL SECONDARY WINDING AND A PRIMARY WINDING WOUND ON A MAGNETIC CORE; SAID PRIMARY WINDING CONNECTED IN SERIES WITH SAID COAXIAL CONDUCTOR; SAID HOUSING FILLED WITH A HIGH DIELECTRIC GAS UNDER PRESSURE GREATER THAN ATMOSPHERIC PRESSURE; SAID COAXIAL CONDUCTOR COMPRISING INNER AND OUTER CONDUCTORS INSULATED FROM ONE ANOTHER; SAID INNER CONDUCTOR EXTENDING BEYOND THE END OF SAID OUTER CONDUCTOR AND THROUGH THE CENTER OF SAID TOROIDAL SEC-
Claim 2
Dependent Claim
132 words
IN COMBINATION; A GROUNDED SEALED CONDUCTIVE HOUSING; A LEAD BUSHING EXTENDING THROUGH SAID CONDUCTIVE HOUSING; A COAXIAL CONDUCTOR EXTENDING THROUGH SAID LEAD BUSHING; A CURRENT TRANSFORMER WITHIN SAID GROUNDED HOUSING INSULATION SUPPORT MEANS CONNECTED BETWEEN SAID GROUNDED HOUSING AND SAID CURRENT TRANSFORMER FOR SUPPORTING SAID CURRENT TRANSFORMER WITHIN SAID GROUNDED HOUSING IN INSULATED RELATION WITH RESPECT TO SAID GROUNDED HOUSING; SAID CURRENT TRANSFORMER HAVING A TOROIDAL SECONDARY WINDING AND A PRIMARY WINDING WOUND ON A MAGNETIC CORE; SAID PRIMARY WINDING CONNECTED IN SERIES WITH SAID COAXIAL CONDUCTOR; SAID HOUSING FILLED WITH A HIGH DIELECTRIC GAS UNDER PRESSURE GREATER THAN ATMOSPHERIC PRESSURE; SAID COAXIAL CONDUCTOR COMPRISING INNER AND OUTER CONDUCTORS INSULATED FROM ONE ANOTHER; SAID INNER CONDUCTOR EXTENDING BEYOND THE END OF SAID OUTER CONDUCTOR AND THROUGH THE CENTER OF SAID TOROIDAL SEC-
References Cited (Backward Citations)
US1957982A
Cited
US2605376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |