US3384513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed nickel-cadmium cell
Assignee: AT&T Inc
•
Filing: 1966-06-28
•
Granted: 1968-05-21
•
Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Mchenry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:57
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/34; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SEALED NICKEL-CADMIUM CELL COMPRISING A CONDUCTIVE METAL OUTER TUBE AND A TUBULAR POSITIVE ELECTRODE, SAID ELECTRODE COMPRISING A PERFORATED METAL TUBE CONTAINING A MIXTURE OF FINELY DIVIDED NICKEL AND NICKEL HYDROXIDE, AND TUBULAR POSITIVE ELECTROD BEING CONCENTRICALLY DISPOSED WITHIN SAID OUTER TUBE, A MIXTURE OF FINELY DIVIDED CADMIUM OXID AND NICKEL HAVEING A WEIGHT RATIO OF CDO TO NI IN THE RANGE 0.1 TO 2.0 COMPLETELY FILLING THE ANNULUS BETWEEN THE TUBULAR POSITIVE ELECTRODE AND THE OUTER TUBE, MEANS FOR SEALING THE CELL AGAINST THE ATMOSPHERE AND MEANS FOR MAKING ELECTRICAL CONTACT EXTERNAL OF THE CELL TO THE TUBULAR POSITIVE ELECTRODE AND THE OUTER TUBE.
Claim 2
Dependent Claim
106 words
A SEALED NICKEL-CADMIUM CELL COMPRISING A CONDUCTIVE METAL OUTER TUBE AND A TUBULAR POSITIVE ELECTRODE, SAID ELECTRODE COMPRISING A PERFORATED METAL TUBE CONTAINING A MIXTURE OF FINELY DIVIDED NICKEL AND NICKEL HYDROXIDE, AND TUBULAR POSITIVE ELECTROD BEING CONCENTRICALLY DISPOSED WITHIN SAID OUTER TUBE, A MIXTURE OF FINELY DIVIDED CADMIUM OXID AND NICKEL HAVEING A WEIGHT RATIO OF CDO TO NI IN THE RANGE 0.1 TO 2.0 COMPLETELY FILLING THE ANNULUS BETWEEN THE TUBULAR POSITIVE ELECTRODE AND THE OUTER TUBE, MEANS FOR SEALING THE CELL AGAINST THE ATMOSPHERE AND MEANS FOR MAKING ELECTRICAL CONTACT EXTERNAL OF THE CELL TO THE TUBULAR POSITIVE ELECTRODE AND THE OUTER TUBE.
References Cited (Backward Citations)
US2994729A
Cited
US3230113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |