Patent US3243672A successfully refreshed from Google Patents.
US3243672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid coolable capacitor
Assignee: Sprague Electric Co
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Filing: 1964-01-31
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Granted: 1966-03-29
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Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
- 👤 David H Simonds
- 👤 George C Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:35
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/08; H01G4/00; H01G4/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A CAPACITOR COMPRISING AN INTERNAL METAL TUBE HAVING A CONVOLUTELY WOUND, EXTENDED COPPER FOIL CAPACITOR SECTION POSITIONED THEREABOUT, THE EXTENDED FOILS BEING JOINED AT EACH END TO PROVIDE A PAIR OF OPPOSED CONTACT AREAS, ONE OF SAID CONTACT AREA BEING CONNECTED TO SAID INTERNAL TUBER AND THE OTHER CONTACT AREA BEING NONINDUCTIVELY CONNECTED TO A METAL CASE WHICH HERMETICALLY HOUSES SAID SECTION, SAID INTERNAL TUBE EXTENDING OUT OPPOSITE ENDS OF SAID CASE; SAID CAPACITANCE SECTION BEING IMPREGNATED WITH AND SURROUNDED BY A DIELECTRIC LIQUID; AN EXTERNAL METAL TUBE WOUND ABOUT SAID CASE; SAID INTERNAL AND EXTERNAL TUBES BEING ADAPTED TO RECEIVE A COOLING FLUID THERETHROUGH.
Claim 2
Dependent Claim
105 words
A CAPACITOR COMPRISING AN INTERNAL METAL TUBE HAVING A CONVOLUTELY WOUND, EXTENDED COPPER FOIL CAPACITOR SECTION POSITIONED THEREABOUT, THE EXTENDED FOILS BEING JOINED AT EACH END TO PROVIDE A PAIR OF OPPOSED CONTACT AREAS, ONE OF SAID CONTACT AREA BEING CONNECTED TO SAID INTERNAL TUBER AND THE OTHER CONTACT AREA BEING NONINDUCTIVELY CONNECTED TO A METAL CASE WHICH HERMETICALLY HOUSES SAID SECTION, SAID INTERNAL TUBE EXTENDING OUT OPPOSITE ENDS OF SAID CASE; SAID CAPACITANCE SECTION BEING IMPREGNATED WITH AND SURROUNDED BY A DIELECTRIC LIQUID; AN EXTERNAL METAL TUBE WOUND ABOUT SAID CASE; SAID INTERNAL AND EXTERNAL TUBES BEING ADAPTED TO RECEIVE A COOLING FLUID THERETHROUGH.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |