Patent US4431502A successfully refreshed from Google Patents.
US4431502A
Expired / Lapsed
US
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Sealing means for filter press cells
Assignee: Olin Corp
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Filing: 1981-12-09
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Granted: 1984-02-14
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Expires: 2001-12-09
Abstract
Abstract The invention relates to an electrolytic cell which is comprised of a first frame member housing an electrode and a second frame member housing an electrode. A separator is positioned between the first frame member and the second frame member. A first sealing means contacts a side of the first frame member and one side of the separator. Contacting the second frame member and the opposite side of the separator is a second sealing means. The first sealing means and the second sealing means are elastomeric solids having a substantially rectangular cross-sectional area where the first sealing means is from about 1.1 to about 3 times the width of the second sealing means. Pressing means are provided which press the frames together against the sealing means and the separator to form a substantially fluid-tight seal. The novel electrolytic cells provide the advantages of simultaneously: a. controlling gasket compression pressures, b. controlling gasket frame surface structural forces, c. efficiently forming a seal, and d. preventing gasket slippage.
Inventors
- 👤 James M. Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:29
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/73; C25B9/77; C25B9/60; H; H01; H01M; H01M8/00; H01M8/02; H01M8/0271; H01M8/0273; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
An electrolytic cell which comprises: a. a first frame member housing an electrode, b. a second frame member housing an electrode, c. a separator positioned between said first frame member and said second frame member, d. a first sealing means contacting a generally planar side of said first frame member and one side of said separator, said first sealing means being an elastomeric solid having a substantially rectangular cross-sectional area, e. a second sealing means contacting a generally planar side of said second frame member and contacting the other side of said separator, the second sealing means being an elastomeric solid having a substantially rectangular cross-sectional area, the initial width of said first sealing means being from about 1.1 to about 3 times the initial width of said second sealing means, and where the expanded width (W) of said second sealing means is defined by the formula: W=w÷(1-c) where w is the initial width, and c is from about 0.05 to about 0.55, and f. pressing means for pressing the frames together against the sealing means and the separator so as to form a substantially fluid-tight seal.
Claim 2
Dependent Claim
187 words
An electrolytic cell which comprises: a. a first frame member housing an electrode, b. a second frame member housing an electrode, c. a separator positioned between said first frame member and said second frame member, d. a first sealing means contacting a generally planar side of said first frame member and one side of said separator, said first sealing means being an elastomeric solid having a substantially rectangular cross-sectional area, e. a second sealing means contacting a generally planar side of said second frame member and contacting the other side of said separator, the second sealing means being an elastomeric solid having a substantially rectangular cross-sectional area, the initial width of said first sealing means being from about 1.1 to about 3 times the initial width of said second sealing means, and where the expanded width (W) of said second sealing means is defined by the formula: W=w÷(1-c) where w is the initial width, and c is from about 0.05 to about 0.55, and f. pressing means for pressing the frames together against the sealing means and the separator so as to form a substantially fluid-tight seal.
Claim 3
Dependent Claim
31 words
The electrolytic cell of claim 1 in which said first sealing means and said second sealing means have a hardness in the range of from about 20 to about 60 durometers.
Claim 4
Dependent Claim
19 words
The electrolytic cell of claim 2 in which said first sealing means and said second sealing means are gaskets.
Claim 5
Dependent Claim
13 words
The electrolytic cell of claim 3 in which said separator is hydraulically permeable.
Claim 6
Dependent Claim
40 words
The electrolytic cell of claim 3 in which said separator is a hydraulically impermeable cation exchange membrane comprised of fluorocarbon polymers having cation exchange means selected from the group consisting of sulfonic acid groups, carboxylic acid groups, and mixtures thereof.
Claim 7
Dependent Claim
36 words
The electrolytic cell of claim 3 in which said first sealing means and said second sealing means is comprised of an elastomer selected from the group consisting of chlorobutadiene, chlorosulfonated polyethylene, ethylene-propylene dimonomer, and gum rubber.
Claim 8
Dependent Claim
15 words
The electrolytic cell of claim 6 in which said first frame member houses a cathode.
Claim 9
Dependent Claim
35 words
The electrolytic cell of claim 7 in which said second frame member houses an anode and is comprised of a valve metal selected from the group consisting of titanium, tantalum, and tungsten and their alloys.
Claim 10
Dependent Claim
32 words
The electrolytic cell of claim 8 in which said initial width of said first sealing means is from about 1.3 to about 2 times said initial width of said second sealing means.
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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) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |