US3243668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tantalum capacitor with glass-to-metal seal and resilient support for terminal
Assignee: Sprague Electric Co
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Filing: 1962-06-29
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Granted: 1966-03-29
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Diggens George William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A SEALED ELECTROLYTIC CAPACITOR COMPRISING A METAL CAPACITOR CASE CONTAINING A POROUS TANTALUM PELLET ANODE HAVING A TANTALUM RISER EXTENDING THEREFROM AND HAVING A DIELECTRIC OXIDE FILM ON THE SURFACES OF SAID ANODE AND RISER, AN INERT SPACER SEPARATING THE ANODE FROM THE CAPACITOR CASE, AN ELECTROLYTE, AN INERT SPACER DISC POSITIONED ABOUT SAID RISER AND SURMOUNTING SAID ANODE, A RESILIENT GASKET SEAL POSITIONED ABOUT SAID RISER AND ABUTTING SAID SPACER DISC, A GLASS-TO-METAL SEAL POSITIONED AGAINST SAID GASKET SEAL, SAID GLASS-TO-METAL SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A TUBULAR METAL EYELET AND SURROUNDED BY AND FUSED TO A METAL RING, SAID RING BEING SOLDERED AT ITS PERIPHERY TO THE CASE WALL; AND A SOLDERABLE LEAD-WIRE BUTT-WELDED TO SAID RISER AT A POINT WITHIN SAID TUBULAR METAL EYELET AND HELD IN PLACE BY SOLDER.
Claim 2
Dependent Claim
138 words
A SEALED ELECTROLYTIC CAPACITOR COMPRISING A METAL CAPACITOR CASE CONTAINING A POROUS TANTALUM PELLET ANODE HAVING A TANTALUM RISER EXTENDING THEREFROM AND HAVING A DIELECTRIC OXIDE FILM ON THE SURFACES OF SAID ANODE AND RISER, AN INERT SPACER SEPARATING THE ANODE FROM THE CAPACITOR CASE, AN ELECTROLYTE, AN INERT SPACER DISC POSITIONED ABOUT SAID RISER AND SURMOUNTING SAID ANODE, A RESILIENT GASKET SEAL POSITIONED ABOUT SAID RISER AND ABUTTING SAID SPACER DISC, A GLASS-TO-METAL SEAL POSITIONED AGAINST SAID GASKET SEAL, SAID GLASS-TO-METAL SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A TUBULAR METAL EYELET AND SURROUNDED BY AND FUSED TO A METAL RING, SAID RING BEING SOLDERED AT ITS PERIPHERY TO THE CASE WALL; AND A SOLDERABLE LEAD-WIRE BUTT-WELDED TO SAID RISER AT A POINT WITHIN SAID TUBULAR METAL EYELET AND HELD IN PLACE BY SOLDER.
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 |