US4053687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1976-10-12
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Granted: 1977-10-11
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Expires: 1996-10-12
Abstract
Abstract An electrochemical cell that has a compact block formed by an assembly of first and second electrodes of opposite polarity separated by separator means. The block is housed in a container having a base and a cover. The rim of the container is turned down over the periphery of the cover to seal off the container contents. The borders of the first electrode project from opposite ends of the block and bear against the base and the cover. The invention is particularly applicable to a cylindrical cell having a spirally wound electrode block.
Inventors
- 👤 Jean Coibion
- 👤 Jean Lafaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:01
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/04; H01M10/0431; H01M50/00; H01M50/30; H01M50/317; H01M50/325; H01M50/50; H01M6/00; H01M6/04; H01M6/06; H01M6/10; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
95 words
An electrochemical cell comprising a metal container having a closed base, an open upper end having a rim, a cover, means for effecting a seal between the container and cover, and a compact block positioned within said container comprising an assembly of electrodes of opposite polarity and separator means between such electrodes, one of said electrodes having conductive borders respectively projecting outwardly from opposite ends of said block, said borders resepctively bearing against the cover and base of said container, said borders providing supports for said block between the cover and base of said container.
Claim 2
Dependent Claim
95 words
An electrochemical cell comprising a metal container having a closed base, an open upper end having a rim, a cover, means for effecting a seal between the container and cover, and a compact block positioned within said container comprising an assembly of electrodes of opposite polarity and separator means between such electrodes, one of said electrodes having conductive borders respectively projecting outwardly from opposite ends of said block, said borders resepctively bearing against the cover and base of said container, said borders providing supports for said block between the cover and base of said container.
Claim 3
Dependent Claim
27 words
An electric cell according to claim 1, wherein at least one of the said supports is provided by the outer edge of one of the electrode borders.
Claim 4
Dependent Claim
33 words
An electric cell according to claim 1, wherein at least one of the electrode borders is folded substantially at right-angles to the rest of the electrode to serve as one of said supports.
Claim 5
Dependent Claim
37 words
An electric cell according to claim 1, wherein the cover is made of metal and forms a terminal of first polarity of the cell, and including an insulating and sealing ring interposed between said cover and rim.
Claim 6
Dependent Claim
22 words
An electric cell according to claim 1, wherein the cover is metallic and in direct contact with one of the projecting borders.
Claim 7
Dependent Claim
20 words
An electric cell according to claim 5, wherein the metallic cover is integrated with the said one of the borders.
Claim 8
Dependent Claim
29 words
An electric cell according to claim 1, wherein the cover is of electrically insulating material and includes a terminal of first polarity for the electric cell passing through it.
Claim 9
Dependent Claim
32 words
An electric cell according to claim 4, including a metallic connection part electrically connecting the said terminal to one of the projecting borders of said one of the electrodes of said block.
Claim 10
Dependent Claim
25 words
An electric cell according to claim 8, wherein the connection part includes a generally plane portion with edges folded in the direction of the block.
Claim 11
Dependent Claim
19 words
An electric cell according to claim 8, wherein the connection part is integrated with said one of the borders.
Claim 12
Dependent Claim
16 words
An electric cell according to claim 8, wherein the connection part is integrated with the terminal.
Claim 13
Dependent Claim
27 words
An electric cell according to claim 1, wherein said last named means comprises an insulating sheet interposed between the projecting border adjacent the base of the container.
Claim 14
Dependent Claim
12 words
An electric cell according to claim 12, wherein the sheet is resilient.
Claim 15
Dependent Claim
45 words
An electric cell according to claim 1 including a central conductive core and wherein the electrodes are spirally wound around said conductive core, said core being in contact with an end of another one of said electrodes and providing an electrical connection for the latter.
Claim 16
Dependent Claim
30 words
An electric cell according to claim 14, wherein one end of the core is in contact with the container which forms a terminal of second polarity of the electric cell.
Claim 17
Dependent Claim
28 words
An electric cell according to claim 14, wherein one end of the core passes through the container and forms a terminal of second polarity of the electric cell.
Claim 18
Dependent Claim
28 words
An electric cell according to claim 14, wherein one end of the core passes through the cover and forms a terminal of second polarity of the electric cell.
Claim 19
Dependent Claim
30 words
An electric cell according to claim 14, wherein one end of the core is in contact with the cover which forms a terminal of second polarity of the electric cell.
Claim 20
Dependent Claim
27 words
An electric cell according to claim 17, wherein the cover has an annular lip bearing resilently on the lateral surface of the core to form a valve.
Claim 21
Dependent Claim
17 words
An electric cell according to claim 14, wherein the said end is spot welded to the core.
Claim 22
Dependent Claim
25 words
An electric cell according to claim 14, said core has a longitudinal slot, the said end being inserted in said longitudinal slot of the core.
Claim 23
Dependent Claim
18 words
An electric cell according to claim 14, wherein the said end is fixed to the core by rivetting.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |