Patent US2786090A successfully refreshed from Google Patents.
US2786090A
Expired / Lapsed
US
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Electrolyte level control for a storage battery
Assignee: Exide Technologies LLC
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Filing: 1953-06-25
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Granted: 1957-03-19
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Expires: 1973-06-25
Abstract
No abstract record available.
Inventors
- 👤 Leland E Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:08
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/0007; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A STORAGE BATTERY CELL, MEANS FOR CONTROLLING THE ELECTROLYTE OF SAID CELL AT DIFFERENT LEVELS, COMPRISING A FIRST SLEEVE TERMINATING IN A TAPERED PORTION DEFINING AN OPENING EXTENDING FROM A LOWER LEVEL PROVIDING OPTIMUN ELECTROLYTE FOR LOW TEMPERATURE OPERATION OF SAID BATTERY CELL TO AN UPPER LEVEL PROVIDING OPTIMUM ELECTROLYTE FOR HIGH TEMPERATURE OPERATION OF SAID CELL, A SLOTTED SLEEVE ROTATABLY POSITIONED WITHIN SAID FIRST SLEEVE, SAID SLOT BEING ADAPTED TO REGISTER WITH SAID OPENING AND EXTENDING FOR A SUBSTANTIAL DISTANCE ABOVE AND BELOW THE LOWER END OF SAID FIRST SLEEVE, A VENT PASSAGE IN SAID CELL SEPARATE FROM SAID SLEEVES, AND CLOSURE MEANS NORMALLY ASSOCIATED WITH THE UPPER END OF SAID SLOTTED SLEEVE AND ADAPTED FOR SELECTIVELY SEALING SAID SLOTTED SLEEVE OR SAID VENT OPENING, SAID CLOSURE MEANS CLOSING SAID VENT PASSAGE WHEN IN AN OPEN POSITION.
Claim 2
Dependent Claim
139 words
IN A STORAGE BATTERY CELL, MEANS FOR CONTROLLING THE ELECTROLYTE OF SAID CELL AT DIFFERENT LEVELS, COMPRISING A FIRST SLEEVE TERMINATING IN A TAPERED PORTION DEFINING AN OPENING EXTENDING FROM A LOWER LEVEL PROVIDING OPTIMUN ELECTROLYTE FOR LOW TEMPERATURE OPERATION OF SAID BATTERY CELL TO AN UPPER LEVEL PROVIDING OPTIMUM ELECTROLYTE FOR HIGH TEMPERATURE OPERATION OF SAID CELL, A SLOTTED SLEEVE ROTATABLY POSITIONED WITHIN SAID FIRST SLEEVE, SAID SLOT BEING ADAPTED TO REGISTER WITH SAID OPENING AND EXTENDING FOR A SUBSTANTIAL DISTANCE ABOVE AND BELOW THE LOWER END OF SAID FIRST SLEEVE, A VENT PASSAGE IN SAID CELL SEPARATE FROM SAID SLEEVES, AND CLOSURE MEANS NORMALLY ASSOCIATED WITH THE UPPER END OF SAID SLOTTED SLEEVE AND ADAPTED FOR SELECTIVELY SEALING SAID SLOTTED SLEEVE OR SAID VENT OPENING, SAID CLOSURE MEANS CLOSING SAID VENT PASSAGE WHEN IN AN OPEN POSITION.
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) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |