US4303743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air depolarized cell with a gelled electrolyte
Assignee: Gipelec SA
•
Filing: 1980-12-16
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Granted: 1981-12-01
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Expires: 2000-12-16
Abstract
Abstract The cell includes a positive electrode (3), a negative electrode (4) and an expansion space (15), the gelled electrolyte (5) being disposed between the two electrodes firstly in contact with their electrochemical exchange surfaces and secondly between the negative electrode (4) and the expansion space (15). The surface (14) of the electrolyte (5) in the expansion space is covered partially with a plate (18) which exerts a pressure on the electrolyte (5), which pressure presses the electrolyte closely against the surfaces of the electrodes (3, 4).
Inventors
- 👤 Jean-Marie Reau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:28
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
An air depolarized cell with a gelled electrolyte, said cell including a positive electrode, a negative electrode and an expansion space, the gelled electrolyte being disposed between the two electrodes firstly in contact with their electrochemical exchange surfaces and secondly between the negative electrode and the expansion space, the surface of the electrolyte in the expansion space being partially covered with a plate which exerts a pressure on the electrolyte thereby pressing the electrolyte closely against the surfaces of the electrodes.
Claim 2
Dependent Claim
81 words
An air depolarized cell with a gelled electrolyte, said cell including a positive electrode, a negative electrode and an expansion space, the gelled electrolyte being disposed between the two electrodes firstly in contact with their electrochemical exchange surfaces and secondly between the negative electrode and the expansion space, the surface of the electrolyte in the expansion space being partially covered with a plate which exerts a pressure on the electrolyte thereby pressing the electrolyte closely against the surfaces of the electrodes.
Claim 3
Dependent Claim
30 words
A cell according to claim 1, wherein the surface area left uncovered by the plate is equal to 5% to 40% of the electrolyte's surface area in the expansion space.
Claim 4
Dependent Claim
29 words
A cell according to claim 1 or 2, wherein said plate is shaped like the electrolyte's surface in the expansion space and has slots in it above said surface.
Claim 5
Dependent Claim
47 words
A cell according to claim 1 or 2, wherein said plate is shaped like the electrolyte's surface in the expansion space but is of smaller size such that it leaves an uncovered border between the plate and the walls of the cell on the negative electrode side.
References Cited (Backward Citations)
FR754802A
Cited
US3840406A
Cited
LU65821A1
Cited
US3871920A
Cited
US3928072A
Cited
DE2345473C3
Cited
FR2251109B1
Cited
US4009320A
Cited
US4214044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |