US4285794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular electrodes for shunt current elimination
Assignee: James River Delaware Inc
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Filing: 1980-02-19
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Granted: 1981-08-25
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Expires: 2000-02-19
Abstract
Abstract Shunt currents can be eliminated in electrochemical devices by introducing nulling currents via auxilary electrodes. In electrochemical devices including those having a circulating electrolyte, such electrodes are designed to have a generally annular shape in order to provide a substantially uniform current density profile along a common electrolyte carrying manifold. The uniform current density profile allows for the elimination of these harmful shunt currents with a minimum of power consumption.
Inventors
- 👤 Richard J. Bellows
- 👤 Patrick G. Grimes
- 👤 Chester W. Elspass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:06
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/04; H01M8/04276; C; C25; C25B; C25B15/00; C25B15/06; H01M50/00; H01M50/70; H01M50/77; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
83 words
A protective annular electrode for providing a substantially uniform current density along a common manifold of an electrochemical device for reducing or otherwise eliminating undesirable shunt currents in said electrochemical device, comprising: an annular sleeve; means for passing current through said sleeve; a first means for passing a fluid material through said sleeve; a second means for passing a fluid material through said sleeve; and an inner liner disposed within said sleeve for selectively passing a material to the exclusion of other materials.
Claim 2
Dependent Claim
83 words
A protective annular electrode for providing a substantially uniform current density along a common manifold of an electrochemical device for reducing or otherwise eliminating undesirable shunt currents in said electrochemical device, comprising: an annular sleeve; means for passing current through said sleeve; a first means for passing a fluid material through said sleeve; a second means for passing a fluid material through said sleeve; and an inner liner disposed within said sleeve for selectively passing a material to the exclusion of other materials.
Claim 3
Dependent Claim
23 words
The protective annular electrode of claim 1, further comprising means for passing a fluid material to and from said liner via said sleeve.
Claim 4
Dependent Claim
29 words
The protective annular electrode of claim 2, wherein said liner selectively passes ions from a fluid material supplied to said sleeve to an electrolyte in contact with said liner.
Claim 5
Dependent Claim
29 words
The protective annular electrode of claim 2, wherein said liner selectively passes ions from an electrolyte passing through said liner to a fluid material being supplied to said sleeve.
Claim 6
Dependent Claim
33 words
The protective annular electrode of claim 2, wherein said means for passing fluid material to and from said liner via said sleeve are means defining at least one fluid channel in said sleeve.
Claim 7
Dependent Claim
21 words
The protective annular electrode of claim 1, further comprising an annular cap disposed at an end of said sleeve and liner.
Claim 8
Dependent Claim
25 words
The protective annular electrode of claim 6, wherein there are two annular caps, each cap disposed on an opposite end of said sleeve and liner.
Claim 9
Dependent Claim
17 words
The protective annular electrode of claim 6, wherein said liner is porous and said cap is non-porous.
Claim 10
Dependent Claim
18 words
The protective annular electrode of claim 1, wherein said liner has a flange disposed on one end thereof.
Claim 11
Dependent Claim
17 words
The protective annular electrode of claim 9, wherein said liner is porous and said flange is non-porous.
Claim 12
Dependent Claim
15 words
The protective annular electrode of claim 1, wherein said electrode is a negative protective electrode.
Claim 13
Dependent Claim
15 words
The protective annular electrode of claim 1, wherein said electrode is a positive protective electrode.
Claim 14
Dependent Claim
12 words
The protective annular electrode of claim 1, wherein said liner is porous.
Claim 15
Dependent Claim
14 words
The protective annular electrode of claim 1, in combination with an electrolyte carrying manifold.
Claim 16
Dependent Claim
17 words
The protective annular electrode of claim 1, wherein said liner is in fluidic contact with an electrolyte.
Claim 17
Dependent Claim
25 words
The protective annular electrode of claim 1, wherein said liner is selected from a group of materials consisting of: microporous and ion-selective plastics and ceramics.
Claim 18
Dependent Claim
30 words
The protective annular electrode of claim 1, wherein said sleeve is selected from at least one of a group of materials consisting of: carbon, graphite, metallized carbon and ruthenized titanium.
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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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |