US3002041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing nickel-cadmium cells
Assignee: Union Carbide Corp
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Filing: 1959-08-10
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Granted: 1961-09-26
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Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 John L S Daley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:21
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/24; H01M10/28; H01M10/283; H01M10/34; H01M10/42; H01M10/52; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A METHOD OF ASSEMBLING A SEALED NICKEL CADMIUM SECONDARY CELL WHICH COMPRISES AS COMPONENTS A CONTAINER, A COVER FOR SAID CONTAINER, A SEAL GASKET THEREBETWEEN, A NEGATIVE CADMIUM ELECTRODE, A POSITIVE NICKEL ELECTRODE, A SEPARATOR BETWEEN SAID POSITIVE ELECTRODE AND SAID NEGATIVE ELECTRODE AND AN ALKALINE ELECTROLYTE THROUGHOUT, THE IMPROVEMENT WHICH COMPRISES DIMENSIONING SAID COMPONENTS TO FIT LOOSELY WITHIN SAID CONTAINER UPON ASSEMBLING SAID CELL IN ORDER THAT SAID POSITIVE ELECTRODE IS FREE TO SWELL TO APPROXIMATELY THE POINT OF OPTIMUM ELECTRONIC CONDUCTIVITY AND ELECTROLYTIC EFFICIENCY TO ACHIEVE MAXIMUM OUTPUT UPON THE INITIAL CYCLING OF SAID CELL SUBSEQUENT TO THE SEALING OF SAID CELL, SAID DIMENSIONS OF SAID COMPONENTS BEING SUCH THAT SAID SWELLING RESULTS IN TIGHT INTRA-CELL CONTACTS WHEN FURTHER SWELLING OF SAID POSITIVE ELECTRODE IS CONSTRAINED BY SAID NEGATIVE ELECTRODE AND SAID CONTAINER.
Claim 2
Dependent Claim
136 words
IN A METHOD OF ASSEMBLING A SEALED NICKEL CADMIUM SECONDARY CELL WHICH COMPRISES AS COMPONENTS A CONTAINER, A COVER FOR SAID CONTAINER, A SEAL GASKET THEREBETWEEN, A NEGATIVE CADMIUM ELECTRODE, A POSITIVE NICKEL ELECTRODE, A SEPARATOR BETWEEN SAID POSITIVE ELECTRODE AND SAID NEGATIVE ELECTRODE AND AN ALKALINE ELECTROLYTE THROUGHOUT, THE IMPROVEMENT WHICH COMPRISES DIMENSIONING SAID COMPONENTS TO FIT LOOSELY WITHIN SAID CONTAINER UPON ASSEMBLING SAID CELL IN ORDER THAT SAID POSITIVE ELECTRODE IS FREE TO SWELL TO APPROXIMATELY THE POINT OF OPTIMUM ELECTRONIC CONDUCTIVITY AND ELECTROLYTIC EFFICIENCY TO ACHIEVE MAXIMUM OUTPUT UPON THE INITIAL CYCLING OF SAID CELL SUBSEQUENT TO THE SEALING OF SAID CELL, SAID DIMENSIONS OF SAID COMPONENTS BEING SUCH THAT SAID SWELLING RESULTS IN TIGHT INTRA-CELL CONTACTS WHEN FURTHER SWELLING OF SAID POSITIVE ELECTRODE IS CONSTRAINED BY SAID NEGATIVE ELECTRODE AND SAID CONTAINER.
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) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |