US3264708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed capacitor
Assignee: Sprague Electric Co
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Filing: 1962-10-01
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Granted: 1966-08-09
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 George W Diggens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:12
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/10; H01G2/103; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A PROCESS FOR FORMING A HERMETICALLY SEALED ELECTROLYTIC CAPACITOR COMPRISING WELDING AT LEAST ONE GLASSTO-METAL SEAL TO A CAPACITOR SECTION, THERE BEING A RUBBER RING POSITIONED AT ONE END OF THIS ASSEMBLY BETWEEN SAID SECTION AND THE SEAL, SAID SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A METAL LEAD WIRE AND SURROUNDED AND FUSED TO A METAL COLLAR; PROVIDING A SMALL HOLE NEAR ONE END OF A METAL CAPACITOR CASING, INSERTING THE CAPACITOR SECTION INTO THE CASING TO A POINT WHERE THE SPACE BETWEEN THE END OF THE SECTION AND THE RUBBER RING IS OPPOSITE SAID SMALL HOLE; INSERTIING THE END OF A PIPETTE THROUGH SAID HOLE AND INTO SAID SPACE; PUSHING THE SECTION AND SEAL INTO FINAL POSITION AND WELDING THE SEAL TO THE CASING; IMPREGNATING THE CAPACITOR UNIT WITH AN ELECTROLYTE THROUGH SAID PIPETTE; PRE-AGING THE CAPACITOR TO OXIDIZE THE WELDED JOINT AND INTERNAL LEAD; REMOVING THE PIPETTE AND CLOSING THE HOLE BY WELDING WITH THE SAME METAL AS THE CASING.
Claim 2
Dependent Claim
166 words
A PROCESS FOR FORMING A HERMETICALLY SEALED ELECTROLYTIC CAPACITOR COMPRISING WELDING AT LEAST ONE GLASSTO-METAL SEAL TO A CAPACITOR SECTION, THERE BEING A RUBBER RING POSITIONED AT ONE END OF THIS ASSEMBLY BETWEEN SAID SECTION AND THE SEAL, SAID SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A METAL LEAD WIRE AND SURROUNDED AND FUSED TO A METAL COLLAR; PROVIDING A SMALL HOLE NEAR ONE END OF A METAL CAPACITOR CASING, INSERTING THE CAPACITOR SECTION INTO THE CASING TO A POINT WHERE THE SPACE BETWEEN THE END OF THE SECTION AND THE RUBBER RING IS OPPOSITE SAID SMALL HOLE; INSERTIING THE END OF A PIPETTE THROUGH SAID HOLE AND INTO SAID SPACE; PUSHING THE SECTION AND SEAL INTO FINAL POSITION AND WELDING THE SEAL TO THE CASING; IMPREGNATING THE CAPACITOR UNIT WITH AN ELECTROLYTE THROUGH SAID PIPETTE; PRE-AGING THE CAPACITOR TO OXIDIZE THE WELDED JOINT AND INTERNAL LEAD; REMOVING THE PIPETTE AND CLOSING THE HOLE BY WELDING WITH THE SAME METAL AS THE CASING.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |