Patent US3478325A successfully refreshed from Google Patents.
US3240848A
Expired / Lapsed
US
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Method of making encapsulated transformers containing a dielectric gas
Assignee: General Electric Canada Co
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Filing: 1962-03-14
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Granted: 1966-03-15
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Fred E Burke
- 👤 Sheila M Heffren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/022; H01F41/00; H01F41/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF TREATING AN ELECTRICAL TRANSFORMER STRUCTURE COMPRISING (1) INCORPORATING A CHEMICALLY INERT, DIELECTRIC GAS RELEASE AGENT WITHIN SAID STRUCTURE, (2) EVACUATING THE AIR FROM THE INTERSTICES WITHIN SAID STRUCTURE TURE, (3) ENCAPSULATING SAID STRUCTURE IN A RESINOUS MATERIAL, (4) CURING SAID RESINOUS MATERIAL TO ITS GEL STATE AND (5) THEREAFTER HEATING THE ENCAPSULATED STRUCTURE TO ACTIVATE SAID GAS RELEASE AGENT FOR RELEASE OF A DIELECTRIC GAS TO BE CONTAINED IN RESIDUAL VOIDS IN SAID STRUCTURE.
Claim 2
Independent Claim
77 words
THE METHOD OF TREATING AN ELECTRICAL TRANSFORMER STRUCTURE COMPRISING (1) INCORPORATING A CHEMICALLY INERT, DIELECTRIC GAS RELEASE AGENT WITHIN SAID STRUCTURE, (2) EVACUATING THE AIR FROM THE INTERSTICES WITHIN SAID STRUCTURE TURE, (3) ENCAPSULATING SAID STRUCTURE IN A RESINOUS MATERIAL, (4) CURING SAID RESINOUS MATERIAL TO ITS GEL STATE AND (5) THEREAFTER HEATING THE ENCAPSULATED STRUCTURE TO ACTIVATE SAID GAS RELEASE AGENT FOR RELEASE OF A DIELECTRIC GAS TO BE CONTAINED IN RESIDUAL VOIDS IN SAID STRUCTURE.
References Cited (Backward Citations)
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Cited
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Cited
US2893061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |