US3553543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convolutely wound capacitor
Assignee: Sprague Electric Co
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Filing: 1969-05-07
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Granted: 1971-01-05
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Expires: 1989-05-07
Abstract
Abstract OF THE EXTENDED REGION OF EACH METALLIZATION LAYER. THE COMPARATIVELY NONMELTABLE DIELECTRIC IS NONMELTABLE AT TEMPERATURES WHICH MELT THE MELTABLE DIELECTRIC. A CONVOLUTELY WOUND CAPACITOR HAS A COMPAREATIVELY NONMELTABLE DIELECTRIC FILM HAVING A METALLIZATION LAYER IN EXTENDED ELECTRODE FASHION ON OPPOSITE SURFACES THEREOF. A COMPARATIVELY MELTABLE DIELECTRIC FILM IS POSITIONED AGAINST AT LEAST ONE METALLIZATION LAYER. THE FILMS ARE CONVOLUTELY WOUND SO THAT SAID COMPARATIVELY MELTABLE FILM SEPARATES THE METALLIZATION LAYERS. APPLIED-WHILEMOLTEN METAL TERMINALS ARE IN CONTACT WITH AT LEAST PART
Inventors
- 👤 Paul H Netherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/32; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |