Patent US3668583A successfully refreshed from Google Patents.
US3668583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Techniques for casting encapsulated coils
Assignee: General Electric Co
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Filing: 1971-05-10
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Granted: 1972-06-06
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Expires: 1991-05-10
Abstract
Abstract Disclosed is a vaporization cooled inductive apparatus. The apparatus comprises a winding assembly encapsulated in a cast body of solid insulating material and disposed in a sealed tank. The cast winding assembly includes at least one liquid absorbent wick and a vaporizable liquid containing reservoir. The wicks carry said liquid to hot interior regions of the winding. Condenser means are provided for recycling vapors produced during the cooling process.
Inventors
- 👤 Thomas G Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:39
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/10; H01F27/18; H01F27/28; H01F27/32; H01F27/327; H01F2027/328
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
An electrically inductive apparatus comprising: a. a sealed tank; b. a winding assembly disposed within said tank, said assembly comprising: i. an electrically conductive winding layer, said wining layer generating heat upon the passage of electric current therethrough; ii. a first insulating means comprising a thermosetting resin disposed about and in contact with said winding layer; iii. a first liquid absorbent wick disposed about and in contact with said first insulating means; iv. a second insulating means comprising a thermosetting resin disposed about said wick; v. a liquid reservoir disposed adjacent to said winding layer and said wick; vi. a vaporizable liquid disposed in said reservoir and in contact with a portion of said wick, said first wick being adapted for carrying the liquid to said first insulating means whereupon the heat generated by said winding layer is absorbed by said liquid as said liquid vaporizes; and c. condenser means for converting the resulting vapors into liquid form and for returning a portion of said liquid to said reservoir.
Claim 2
Dependent Claim
169 words
An electrically inductive apparatus comprising: a. a sealed tank; b. a winding assembly disposed within said tank, said assembly comprising: i. an electrically conductive winding layer, said wining layer generating heat upon the passage of electric current therethrough; ii. a first insulating means comprising a thermosetting resin disposed about and in contact with said winding layer; iii. a first liquid absorbent wick disposed about and in contact with said first insulating means; iv. a second insulating means comprising a thermosetting resin disposed about said wick; v. a liquid reservoir disposed adjacent to said winding layer and said wick; vi. a vaporizable liquid disposed in said reservoir and in contact with a portion of said wick, said first wick being adapted for carrying the liquid to said first insulating means whereupon the heat generated by said winding layer is absorbed by said liquid as said liquid vaporizes; and c. condenser means for converting the resulting vapors into liquid form and for returning a portion of said liquid to said reservoir.
Claim 3
Dependent Claim
26 words
The inductive apparatus as specified in claim 1 wherein an insulating film is disposed on said first wick and in contact with said first insulating means.
Claim 4
Dependent Claim
37 words
The inductive apparatus as specified in claim 1 wherein said condenser means is disposed in said tank above said winding assembly and wherein a filler material is provided within said tank and disposed about said winding assembly.
Claim 5
Dependent Claim
52 words
The inductive apparatus as specified in claim 1 wherein said first wick has an upper and a lower extremity and wherein said reservoir is disposed adjacent to the lower extremity of said wick and wherein said condenser means also returns a portion of said liquid to the upper extremity of said wick.
Claim 6
Dependent Claim
46 words
The inductive apparatus as specified in claim 1 wherein a second liquid absorbent wick is disposed about said first wick between said first wick and said second insulating means, said first and second wicks being spaced apart from one another to define a vapor passageway therebetween.
Claim 7
Dependent Claim
23 words
The inductive apparatus as specified in claim 1 wherein a vapor passageway is provided between said first wick and said second insulating means.
Claim 8
Dependent Claim
52 words
The inductive apparatus as specified in claim 5 wherein said first wick has an upper and a lower extremity and wherein said reservoir is disposed adjacent to the lower extremity of said wick and wherein said condenser means also supplies a portion of said liquid to the upper extremity of said wick.
Claim 9
Dependent Claim
23 words
The inductive apparatus as specified in claim 7 wherein a filler material is provided within said tank and disposed about said winding assembly.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |