Patent US3849202A successfully refreshed from Google Patents.
US3849202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a metal-air battery
Assignee: CO GENERAL D ELECTRICITE
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Filing: 1972-12-20
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Granted: 1974-11-19
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Expires: 1992-12-20
Abstract
Abstract Electrochemical storage battery of the forced flow type comprising several reaction elements of tubular shape inside which the electrolyte containing zinc in suspension flows, such elements comprising, more particularly inside a copper negative collector in contact with an insulating separator, and outside a positive collector formed by a grid of unfolded metal surrounding the active layer and pressed tight against that layer subsequent to axial traction having caused plastic deformation.
Inventors
- 👤 J Pompon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:18
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/22; H01M8/225; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
236 words
A method of manufacturing electrochemical storage battery elements having an inside space for the flow of an alkaline solution containing a powered metal in suspension and an outside space for the flow of an oxidising gas, said method comprising the steps of producing a coaxial tubular structure comprising, from the inside towards the outside, the following layers in contact with one another: a metallic, unalterable, negative collector, permeable to said alkaline solution and capable of withstanding a radial compression, a porous, water-repellant, insulating, unalterable separator permeable to said alkaline solution but not to said powered metal in suspension, a porous and electronically conductive active layer enabling, within itself, a reducing reaction for the said oxidising gas in contact with the said alkaline solution, and a fine grid; fitting around said coaxial tubular structure a tubular sleeve composed of an unalterable metal which may undergo deformation and which is perforated with holes so that the metal segments remaining between the holes do not form any continuous line throughout its whole length parallel to the axis of said tubular sleeve, and subjecting said tubular sleeve to traction parallel to its axis, thereby increasing its length and decreasing its crosssectional area by plastic deformation until said coaxial tubular structure is perManently radially compressed by said tubular sleeve, said tubular sleeve thereupon constituting, at least partly, a positive collector in electrical contact with said porous and electrically conductive active layer.
Claim 2
Independent Claim
236 words
A method of manufacturing electrochemical storage battery elements having an inside space for the flow of an alkaline solution containing a powered metal in suspension and an outside space for the flow of an oxidising gas, said method comprising the steps of producing a coaxial tubular structure comprising, from the inside towards the outside, the following layers in contact with one another: a metallic, unalterable, negative collector, permeable to said alkaline solution and capable of withstanding a radial compression, a porous, water-repellant, insulating, unalterable separator permeable to said alkaline solution but not to said powered metal in suspension, a porous and electronically conductive active layer enabling, within itself, a reducing reaction for the said oxidising gas in contact with the said alkaline solution, and a fine grid; fitting around said coaxial tubular structure a tubular sleeve composed of an unalterable metal which may undergo deformation and which is perforated with holes so that the metal segments remaining between the holes do not form any continuous line throughout its whole length parallel to the axis of said tubular sleeve, and subjecting said tubular sleeve to traction parallel to its axis, thereby increasing its length and decreasing its crosssectional area by plastic deformation until said coaxial tubular structure is perManently radially compressed by said tubular sleeve, said tubular sleeve thereupon constituting, at least partly, a positive collector in electrical contact with said porous and electrically conductive active layer.
Claim 3
Dependent Claim
83 words
A method according to claim 1, characterised in that the said metal segments remaining between the holes of the said tubular sleeve form two networks of helical lines, the lines of each network being parallel to one another, the lines of a network having, in relation to the axis of the sleeve, an inclination symmetrical to that of the lines of the other network, whereby the said holes are shaped like diamonds each having a diagonal parallel to the axis of the sleeve.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 1 and further comprising the step of fitting a porous, unalterable, water-repellent layer around said cylindrical sleeve.
Claim 5
Dependent Claim
29 words
A method as claimed in claim 1 wherein said negative collector, said separator, said active layer, and said positive conductor all have a circular cross-section and are positioned coaxially.
Claim 6
Dependent Claim
45 words
A method as claimed in claim 1 and further comprising the step of fitting a U-shaped plastic seal around the end portions of said separator and said active layer to ensure proper fluid-tight sealing when said sleeve is subjected to traction parallel to its axis.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |