US4136235A
Expired / Lapsed
US
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Secondary batteries
Assignee: Diamond Shamrock Technologies SA
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Filing: 1977-07-18
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Granted: 1979-01-23
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Expires: 1997-07-18
Abstract
Abstract Storage batteries having negative and positive electrodes in which oxidized lead and/or lead oxide paste for the positive electrodes is applied to a metal base selected from the group consisting of tungsten-rhenium alloys, tantalum and titanium-tantalum alloys and lead and/or oxidized lead paste for the negative electrodes is applied to a metal base selected from the group consisting of tantalum, titanium-tantalum alloys and an alloy of tungsten-rhenium provided with a thin coating of cadmium, silver or lead which avoid the defects of the known electrodes.
Inventors
- 👤 Vittorio De Nora
- 👤 Antonio Nidola
- 👤 Placido M. Spaziante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/68; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
A battery comprising a battery housing provided with a cover, positive electrodes with metal bases pasted with particulate oxidized lead and/or lead oxides, negative electrodes with metal bases pasted with lead and/or oxidized lead and an electrolyte, the positive electrode metal bases being selected from the group consisting of tungsten-rhenium alloys, tantalum and titanium-tantalum alloys and the negative electrode metal base being selected from the group consisting of tantalum, titanium-tantalum alloys and tungsten-rhenium alloys coated with a metal selected from the group consisting of lead, cadmium and silver.
Claim 2
Dependent Claim
88 words
A battery comprising a battery housing provided with a cover, positive electrodes with metal bases pasted with particulate oxidized lead and/or lead oxides, negative electrodes with metal bases pasted with lead and/or oxidized lead and an electrolyte, the positive electrode metal bases being selected from the group consisting of tungsten-rhenium alloys, tantalum and titanium-tantalum alloys and the negative electrode metal base being selected from the group consisting of tantalum, titanium-tantalum alloys and tungsten-rhenium alloys coated with a metal selected from the group consisting of lead, cadmium and silver.
Claim 3
Dependent Claim
17 words
The battery of claim 1 wherein the titanium-tantalum alloys contain 0.1 to 7% by weight of tantalum.
Claim 4
Dependent Claim
17 words
The battery of claim 1 wherein the tungsten-rhenium alloys contain 0.1 to 2.5% by weight of rhenium.
Claim 5
Dependent Claim
18 words
The battery of claim 1 wherein the coating on the tungsten-rhenium alloy is 0.1 to 20 microns thick.
Claim 6
Dependent Claim
131 words
A lead-acid storage battery comprising a battery housing providing with a cover, positive electrodes with metal bases pasted with particulate oxidized lead and/or lead oxides, negative electrodes with metal bases pasted with lead and/or oxidized lead and a sulfuric acid electrolyte, the positive electrode metal bases selected from the group consisting of tantalum, an alloy of titanium containing 0.1 to 7% by weight of tantalum and an alloy of tungsten containing 0.1 to 2.5% by weight of rhenium and the negative electrode metal bases being selected from the group consisting of tantalum, an alloy of titanium containing 0.1 to 7% by weight of tantalum and an alloy of tungsten containing 0.1 to 2.5% by weight of rhenium coated with a metal selected from the group consisting of silver, lead and cadmium.
Claim 7
Dependent Claim
131 words
A lead-acid storage battery comprising a battery housing providing with a cover, positive electrodes with metal bases pasted with particulate oxidized lead and/or lead oxides, negative electrodes with metal bases pasted with lead and/or oxidized lead and a sulfuric acid electrolyte, the positive electrode metal bases selected from the group consisting of tantalum, an alloy of titanium containing 0.1 to 7% by weight of tantalum and an alloy of tungsten containing 0.1 to 2.5% by weight of rhenium and the negative electrode metal bases being selected from the group consisting of tantalum, an alloy of titanium containing 0.1 to 7% by weight of tantalum and an alloy of tungsten containing 0.1 to 2.5% by weight of rhenium coated with a metal selected from the group consisting of silver, lead and cadmium.
Claim 8
Dependent Claim
33 words
A positive electrode for a lead-acid battery comprising an electrode grid selected from the group consisting of tungsten-rhenium alloys, tantalum and titanium-tantalum alloys supporting a paste containing particulate oxidized lead and/or lead oxides.
Claim 9
Dependent Claim
33 words
A positive electrode for a lead-acid battery comprising an electrode grid selected from the group consisting of tungsten-rhenium alloys, tantalum and titanium-tantalum alloys supporting a paste containing particulate oxidized lead and/or lead oxides.
Claim 10
Dependent Claim
29 words
The electrode of claim 6 wherein the tungsten-rhenium alloy contains 0.1 to 2.5% by weight of rhenium and the titanium-tantalum alloy contains 0.1 to 7% by weight of tantalum.
Claim 11
Dependent Claim
52 words
A negative electrode for a lead-acid battery consisting essentially of an electrode grid selected from the group consisting of tantalum, titanium-tantalum alloys and tungsten-rhenium alloys provided with an exterior thin coating of a metal selected from the group consisting of silver, cadmium and lead supporting a paste of lead and/or oxidized lead.
Claim 12
Dependent Claim
52 words
A negative electrode for a lead-acid battery consisting essentially of an electrode grid selected from the group consisting of tantalum, titanium-tantalum alloys and tungsten-rhenium alloys provided with an exterior thin coating of a metal selected from the group consisting of silver, cadmium and lead supporting a paste of lead and/or oxidized lead.
Claim 13
Dependent Claim
30 words
The electrode base of claim 8 wherein the tungsten-rhenium alloy contains 0.1 to 2.5% by weight of rhenium and the titanium-tantalum alloy contains 0.1 to 7% by weight of tantalum.
Claim 14
Dependent Claim
19 words
The electrode base of claim 8 wherein the coating on the tungsten-rhenium alloy is 0.1 to 20 microns thick.
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |