US3564359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular capacitor
Assignee: Erie Technological Products Inc
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Filing: 1967-08-10
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Granted: 1971-02-16
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Expires: 1987-08-10
Abstract
Abstract A TUBULAR CAPACITOR WITH A GROUND ELECTRODE SPACED INWARD FROM THE ENDS OF THE TUBE AND WITH TWO OTHER ELECTRODES SPACED FROM EACH OTHER AT THE CENTER OF THE TUBE AND EXTENDING RESPECTIVELY TOWARD OPPOSITE ENDS OF THE TUBE. THE GROUND ELECTRODE IS APPLIED TO A LAYER OF GREEN CERAMIC AND THE OTHER TWO ELECTRODES ARE APPLIED TO ANOTHER LAYER OF GREEN CERAMIC AND THE LAYERS OF CERAMIC ARE ARRANGED ONE ON TOP OF THE OTHER AND SPIRALLY WRAPPED A PLURALITY OF TURNS ABOUT THE AXIS OF THE TUBE. THE SPIRALLED TURNS OF THE GROUND ELECTRODE ARE SHORTED BY CONDUCTIVE MATERIAL IN ONE OR MORE HOLES THROUGH THE CERAMIC BETWEEN THE TWO OTHER ELECTRODES.
Inventors
- 👤 Nello Coda
- 👤 Lawrence J Ruffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:28
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/35; H01G4/38; H01G4/385; H01G4/40
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |