Patent US2932681A successfully refreshed from Google Patents.
US2932681A
Expired / Lapsed
US
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Battery electrolyte circulation device
Assignee: Yardney International Corp
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Filing: 1955-12-27
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Granted: 1960-04-12
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Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Solomon Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:49
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0413; H01M50/00; H01M50/70; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
AN ELECTROCHEMICAL BATTERY COMPRISING A CASING CONTAINING AN ELECTROLYTE, A PARTITION FORMING A FIRST AND A SECOND CHAMBER IN SAID CASING, SAID ELECTROLYTE BEING PRESENT IN BOTH OF SAID CHAMBERS, AT LEAST ONE ELECTRODE OF ONE POLARITY AND AT LEAST ONE ELECTRODE OF THE OPPOSITE POLARITY IN SAID FIRST CHAMBER, SEMI-PERMEABLE SEPARATOR MEANS BETWEEN SAID ELECTRODES FORMING AROUND AT LEAST ONE OF SAID ELECTRODES AN ENVELOPE OPEN AT THE TOP ABOVE THE NORMAL LEVEL OF THE ELECTROLYTE, SAID PARTITION FORMING A RESTRICTED PASSAGE FOR ELECTROLYTE FROM SAID FIRST CHAMBER TO SAID SECOND CHAMBER, AND A FLUID-ACTUATED EXPANSIBLE MEMBER IN SECOND CHAMBER OPERABLE TO EXPEL SOME OF SAID ELECTROLYTE FROM SAID SECOND CHAMBER TO SAID FIRST CHAMBER, THEREBY RAISING THE ELECTROLYTE LEVEL IN SAID FIRST CHAMBER ABOVE THE TOP OF SAID ENVELOPE.
Claim 2
Dependent Claim
131 words
AN ELECTROCHEMICAL BATTERY COMPRISING A CASING CONTAINING AN ELECTROLYTE, A PARTITION FORMING A FIRST AND A SECOND CHAMBER IN SAID CASING, SAID ELECTROLYTE BEING PRESENT IN BOTH OF SAID CHAMBERS, AT LEAST ONE ELECTRODE OF ONE POLARITY AND AT LEAST ONE ELECTRODE OF THE OPPOSITE POLARITY IN SAID FIRST CHAMBER, SEMI-PERMEABLE SEPARATOR MEANS BETWEEN SAID ELECTRODES FORMING AROUND AT LEAST ONE OF SAID ELECTRODES AN ENVELOPE OPEN AT THE TOP ABOVE THE NORMAL LEVEL OF THE ELECTROLYTE, SAID PARTITION FORMING A RESTRICTED PASSAGE FOR ELECTROLYTE FROM SAID FIRST CHAMBER TO SAID SECOND CHAMBER, AND A FLUID-ACTUATED EXPANSIBLE MEMBER IN SECOND CHAMBER OPERABLE TO EXPEL SOME OF SAID ELECTROLYTE FROM SAID SECOND CHAMBER TO SAID FIRST CHAMBER, THEREBY RAISING THE ELECTROLYTE LEVEL IN SAID FIRST CHAMBER ABOVE THE TOP OF SAID ENVELOPE.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |