US2980748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed alkaline accumulator
Assignee: Individual
•
Filing: 1959-08-06
•
Granted: 1961-04-18
•
Expires: 1979-08-06
Abstract
No abstract record available.
Inventors
- 👤 Piroux Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:20
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/22; H01M10/00; H01M10/34; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD OF MANUFACTURE FOR A FLUID-TIGHT ELECTRIC ACCUMULATOR OF THE NICKEL-CADMIUM TYPE COMPRISING A FLUID-TIGHT CONTAINER HAVING A BLOCK CONSTITUTED BY A STACK OF PLATE ELECTRODES AND THIN SEPARATORS, THE SAID METHOD CONSISTING IN FILLING THE SAID CONTAINER WITH ELECTROLYTE COMPOSED OF POTASH HAVING A DENSITY OF 10 TO 20* BAUME'' IN SUFFICIENT QUANTITY TO SATURATE THE BLOCK OF ELECTRODES AND SEPARATORS, THEN INVERTING THE POSITION OF THE CONTAINER AND CONNECTING THE ACCUMULATOR TO A SOURCE OF CURRENT WHICH ENSURES ITS ELECTRIC FORMATION, AND IN EXPELLING OUT OF THE CONTAINER THE EXCESS OF ELECTROLYTE WHICH IS UNRETAINED BY THE BLOCK AT THE END OF THE CHARGING PERIOD WHEN THE EVOLUTION OF GAS BEGINS, AND CLOSING SAID CONTAINER IN A FLUID-TIGHT MANNER AFTER COMPLETION OF THE EXPULSION OF THE EXCESS OF ELECTROLYTE.
Claim 2
Independent Claim
132 words
A METHOD OF MANUFACTURE FOR A FLUID-TIGHT ELECTRIC ACCUMULATOR OF THE NICKEL-CADMIUM TYPE COMPRISING A FLUID-TIGHT CONTAINER HAVING A BLOCK CONSTITUTED BY A STACK OF PLATE ELECTRODES AND THIN SEPARATORS, THE SAID METHOD CONSISTING IN FILLING THE SAID CONTAINER WITH ELECTROLYTE COMPOSED OF POTASH HAVING A DENSITY OF 10 TO 20* BAUME'' IN SUFFICIENT QUANTITY TO SATURATE THE BLOCK OF ELECTRODES AND SEPARATORS, THEN INVERTING THE POSITION OF THE CONTAINER AND CONNECTING THE ACCUMULATOR TO A SOURCE OF CURRENT WHICH ENSURES ITS ELECTRIC FORMATION, AND IN EXPELLING OUT OF THE CONTAINER THE EXCESS OF ELECTROLYTE WHICH IS UNRETAINED BY THE BLOCK AT THE END OF THE CHARGING PERIOD WHEN THE EVOLUTION OF GAS BEGINS, AND CLOSING SAID CONTAINER IN A FLUID-TIGHT MANNER AFTER COMPLETION OF THE EXPULSION OF THE EXCESS OF ELECTROLYTE.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |