US3928072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air depolarized electric cell
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1974-07-18
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Granted: 1975-12-23
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Expires: 1994-07-18
Abstract
Abstract Air depolarized electric cell comprising a negative electrode occupying a peripheral position, an electrolyte which is preferably gelled and a positive electrode mass occupying a central position within said negative electrode. The positive electrode is provided with a funnel in the center of the positive mass and with a metallic current collector disposed in the funnel in contact with walls of the funnel. The collector comprises a metallic wire in the form of a helix at least partially incrusted or embedded in the wall of the said funnel.
Inventors
- 👤 Gerard Gerbier
- 👤 Pierre Depoix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M50/00; H01M50/50; H01M50/531; H01M50/533; H01M50/534; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
AIR DEPOLARIZED ELECTRIC CELL COMPRISING A NEGATIVE ELECTRODE OCCUPYING A PERIPHERAL POSITION, AN ELECTROLYTE AND A POSITIVE MASS OCCUPYING A PERIPHERAL POSITION, AN ELECTROLYTE AND ELECTRODE, SAID POSITIVE ELECTRODE HAVING A FUNNEL LOCATED IN THE CENTER OF THE POSITIVE MASS, A METALLIC CURRENT COLLECTOR DISPOSED IN SAID FUNNEL IN CONTACT WITH THE WALLS OF SAID FUNNEL, THE SAID CURRENT COLLECTOR COMPRISING AT LEAST ONE METALLIC WIRE
Claim 2
Dependent Claim
66 words
AIR DEPOLARIZED ELECTRIC CELL COMPRISING A NEGATIVE ELECTRODE OCCUPYING A PERIPHERAL POSITION, AN ELECTROLYTE AND A POSITIVE MASS OCCUPYING A PERIPHERAL POSITION, AN ELECTROLYTE AND ELECTRODE, SAID POSITIVE ELECTRODE HAVING A FUNNEL LOCATED IN THE CENTER OF THE POSITIVE MASS, A METALLIC CURRENT COLLECTOR DISPOSED IN SAID FUNNEL IN CONTACT WITH THE WALLS OF SAID FUNNEL, THE SAID CURRENT COLLECTOR COMPRISING AT LEAST ONE METALLIC WIRE
Claim 3
Dependent Claim
21 words
Electric cell according to claim 1, characterized in that the said metallic wire is completely embedded in the said positive mass.
Claim 4
Dependent Claim
51 words
Electric cell according to claim 2 characterized in that said wire is wound into a helical configuration forming a helix, said helix being located inside the funnel of said positive mass, the complete embedment of said wire in the internal walls of said funnel leaving said funnel free of any protuberances.
Claim 5
Dependent Claim
23 words
Electrical cell according to claim 3, characterized in that an end turn of the helix is also embedded in the positive active mass.
Claim 6
Dependent Claim
46 words
Electric cell according to claim 3, including positive and negative terminals for said cell and characterized in that an end of the helix is extended by a rectilinear part colinear with the axis of said helix and connected to the positive terminal of the electric cell.
Claim 7
Dependent Claim
43 words
Electric cell according to claim 3, including positive and negative terminals for said cell and characterized in that an end of the helix is extended by a rectilinear part, tangential to the helix and connected to the positive terminal of the electric cell.
Claim 8
Dependent Claim
25 words
ElectriC cell according to claim 1, characterized in that the said current collector is constituted by a helix comprised of a network of metallic wires.
Claim 9
Dependent Claim
36 words
Electric cell according to claim 1, characterized in that the said wire is at least at its surface, made of a metal selected from the group consisting of nickel, nickel-plated copper, nickel-plated iron and stainless steel.
References Cited (Backward Citations)
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US2938064A
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US3288642A
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Cited
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |