Patent US3273028A successfully refreshed from Google Patents.
US3273028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed electrolytic capacitor
Assignee: Duracell Inc USA
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Filing: 1963-06-27
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Granted: 1966-09-13
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Julian G Sparkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:25
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
IN AN ELECTROLYTIC CAPACITOR, A CONTAINER-SHAPED CATHODE HAVING ONE OPEN END AND A SHOULDER ADJACENT SAID END, AN ELECTROLYTE CONTAINED WITHIN SAID CATHODE, AN ANODE OF FILM-FORMING METAL CONCENTRICALLY DISPOSED WITHIN SAID CATHODE, A RESILIENT INSULATING MEMBER RESTING ON SAID SHOULDER OF THE CATHODE, A TOP MEMBER AFFIXED TO SAID ANODE, AND HAVING A NONPLANAR MARGINAL SURFACE ENGAGING SAID RESILIENT INSULATING MEMBER PROVIDING A SEAL FOR SAID CATHODE AND SUPPORTING SAID ANODE WITHIN SAID CATHODE, CONDUCTIVE SPRING MEANS RESTING UPON SAID ANODE TOP MEMBER, A POSITIVE TERMINAL ASSEMBLY COMPRISING AN INNER TUBULAR MEMBER AND AN OUTER ENCIRCLING MEMBER SEPARATED BY A GLASS-LIKE INSULATING BODY FUSED WITH SAID INNER AND OUTER MEMBERS FORMING A HERMETIC SEAL, A POSITIVE TERMINAL WIRE PROJECTING THROUGH SAID INNER MEMBER AND BONDED THERETO FORMING A HERMETIC SEAL, A CONTACT WASHER CONTIGUOUS WITH SAID SPRING MEANS AND AFFIXED TO SAID INNER MEMBER FOR ANODIC CONTACT, AN INSULATING DISC SEPARATING SAID CONTACT WASHER FROM SAID OUTER MEMBER, AND THE OPEN END OF SAID CATHODE BEING TURNED OVER UPON SAID OUTER MEMBER AND COMPRISING SAID SPRING MEANS FOR DEFORMING SAID RESILIENT INSULATING MEMBER.
Claim 2
Dependent Claim
184 words
IN AN ELECTROLYTIC CAPACITOR, A CONTAINER-SHAPED CATHODE HAVING ONE OPEN END AND A SHOULDER ADJACENT SAID END, AN ELECTROLYTE CONTAINED WITHIN SAID CATHODE, AN ANODE OF FILM-FORMING METAL CONCENTRICALLY DISPOSED WITHIN SAID CATHODE, A RESILIENT INSULATING MEMBER RESTING ON SAID SHOULDER OF THE CATHODE, A TOP MEMBER AFFIXED TO SAID ANODE, AND HAVING A NONPLANAR MARGINAL SURFACE ENGAGING SAID RESILIENT INSULATING MEMBER PROVIDING A SEAL FOR SAID CATHODE AND SUPPORTING SAID ANODE WITHIN SAID CATHODE, CONDUCTIVE SPRING MEANS RESTING UPON SAID ANODE TOP MEMBER, A POSITIVE TERMINAL ASSEMBLY COMPRISING AN INNER TUBULAR MEMBER AND AN OUTER ENCIRCLING MEMBER SEPARATED BY A GLASS-LIKE INSULATING BODY FUSED WITH SAID INNER AND OUTER MEMBERS FORMING A HERMETIC SEAL, A POSITIVE TERMINAL WIRE PROJECTING THROUGH SAID INNER MEMBER AND BONDED THERETO FORMING A HERMETIC SEAL, A CONTACT WASHER CONTIGUOUS WITH SAID SPRING MEANS AND AFFIXED TO SAID INNER MEMBER FOR ANODIC CONTACT, AN INSULATING DISC SEPARATING SAID CONTACT WASHER FROM SAID OUTER MEMBER, AND THE OPEN END OF SAID CATHODE BEING TURNED OVER UPON SAID OUTER MEMBER AND COMPRISING SAID SPRING MEANS FOR DEFORMING SAID RESILIENT INSULATING MEMBER.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |