US3131337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitor seal
Assignee: Sprague Electric Co
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Filing: 1962-05-18
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Granted: 1964-04-28
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Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Warren J Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/224; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A SEALED ELECTROLYTIC CAPACITOR COMPRISING A METAL CAPACITOR CASE CONTAINING A FILMED VALVE-METAL ANODE WITH ATTACHED FILMED VALVE-METAL LEAD-WIRE, AN ELECTROLYTE, A CIRCUMFERENTIALLY GROOVED METAL ANNULUS ADJACENT SAID ANODE AND HELD IN PLACE BY ENGAGING SAID GROOVE WITH AN INTERNAL BEADING OF THE WALL OF SAID CASE, SAID ANNULUS SUPPORTING A COMPRESSIBLE MEMBER WHICH IS POSITIONED ABOUT SAID LEAD-WIRE AND ABUTTING A GLASS-TO-METAL SEAL, SAID SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A TUBULAR METAL EYELET AND SURROUNDED BY AND FUSED TO A METAL WASHER, SAID WASHER BEING SOLDERED AT ITS PERIPHERY TO THE CASE WALL; AND A SOLDERABLE LEAD-WIRE BUTT-
Claim 2
Dependent Claim
104 words
A SEALED ELECTROLYTIC CAPACITOR COMPRISING A METAL CAPACITOR CASE CONTAINING A FILMED VALVE-METAL ANODE WITH ATTACHED FILMED VALVE-METAL LEAD-WIRE, AN ELECTROLYTE, A CIRCUMFERENTIALLY GROOVED METAL ANNULUS ADJACENT SAID ANODE AND HELD IN PLACE BY ENGAGING SAID GROOVE WITH AN INTERNAL BEADING OF THE WALL OF SAID CASE, SAID ANNULUS SUPPORTING A COMPRESSIBLE MEMBER WHICH IS POSITIONED ABOUT SAID LEAD-WIRE AND ABUTTING A GLASS-TO-METAL SEAL, SAID SEAL COMPRISING A MASS OF GLASS SURROUNDING AND FUSED TO A TUBULAR METAL EYELET AND SURROUNDED BY AND FUSED TO A METAL WASHER, SAID WASHER BEING SOLDERED AT ITS PERIPHERY TO THE CASE WALL; AND A SOLDERABLE LEAD-WIRE BUTT-
References Cited (Backward Citations)
US2825855A
Cited
US3114085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |