Patent US3855002A successfully refreshed from Google Patents.
US3855002A
Expired / Lapsed
US
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Liquid electrolyte fuel cell with gas seal
Assignee: RTX Corp
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Filing: 1973-12-21
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Granted: 1974-12-17
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Expires: 1993-12-21
Abstract
Abstract Escape of reactant gases from a fuel cell is prevented by sandwiching an electrolyte-saturated matrix between a separator plate and an electrode, utilizing the electrode for support and the electrolyte itself to provide a wet capillary seal against the escape of gas.
Inventors
- 👤 C Schroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:41
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/02; H01M8/0271; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
A FUEL CELL ASSEMBLY FOR FUEL CELLS UTILIZING GASEOUS REACTANTS AND A LIQUID ELECTROLYTE WHICH COMPRISES: A PAIR OF GASINNER AND OUTER SURFACE, THE INNER SURFACE COMPRISING A CATALYTIC LAYER, ONE ELECTRODE BEING POSITIONED TO EXTEND BEYOND THE OTHER; AN ELECTROLYTE-SATURATED MATRIX SANDWICHED BETWEEN THE INNER SURFACES OF THE ELECTRODES AND IN CONTACT THEREWITH THE MATRIX HAVING AN END PORTION SUBSTANTIALLY COEXTENSIVE IN LENGTH WITH A FIRST OF THE ELECTRODES AND EXTENDING BEYOND THE SECOND OF THE ELECTRODES; AND A PAIR OF GAS SEPARATORS, ONE POSITIONED OUTWARDLY OF EACH ELECTRODE DEFINING A FIRST GAS SPACE BETWEEN THE FIRST OF THE ELECTRODES AND ONE SEPARATOR AND A SECOND GAS SPACE BETWEEN THE SECOND OF THE ELECTRODES AND THE OTHER SEPARATOR, THE SURFACE OF THE SEPARATOR CONFRONTING THE FIRST OF THE ELECTRODES BEING FORMED WITH A GAS PASSAGEWAY
Claim 2
Dependent Claim
136 words
A FUEL CELL ASSEMBLY FOR FUEL CELLS UTILIZING GASEOUS REACTANTS AND A LIQUID ELECTROLYTE WHICH COMPRISES: A PAIR OF GASINNER AND OUTER SURFACE, THE INNER SURFACE COMPRISING A CATALYTIC LAYER, ONE ELECTRODE BEING POSITIONED TO EXTEND BEYOND THE OTHER; AN ELECTROLYTE-SATURATED MATRIX SANDWICHED BETWEEN THE INNER SURFACES OF THE ELECTRODES AND IN CONTACT THEREWITH THE MATRIX HAVING AN END PORTION SUBSTANTIALLY COEXTENSIVE IN LENGTH WITH A FIRST OF THE ELECTRODES AND EXTENDING BEYOND THE SECOND OF THE ELECTRODES; AND A PAIR OF GAS SEPARATORS, ONE POSITIONED OUTWARDLY OF EACH ELECTRODE DEFINING A FIRST GAS SPACE BETWEEN THE FIRST OF THE ELECTRODES AND ONE SEPARATOR AND A SECOND GAS SPACE BETWEEN THE SECOND OF THE ELECTRODES AND THE OTHER SEPARATOR, THE SURFACE OF THE SEPARATOR CONFRONTING THE FIRST OF THE ELECTRODES BEING FORMED WITH A GAS PASSAGEWAY
Claim 3
Dependent Claim
25 words
The assembly according to claim 1 wherein: the electrolyte is a strong base; and the reactive elements of the gaseous reactants are hydrogen and oxygen.
References Cited (Backward Citations)
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US3404041A
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US3438814A
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US3436272A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |