Patent US4898653A successfully refreshed from Google Patents.
US4898653A
Expired / Lapsed
US
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Combination electrolysis cell seal member and membrane tentering means
Assignee: Dow Chemical Co
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Filing: 1988-09-26
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Granted: 1990-02-06
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Expires: 2008-09-26
Abstract
Abstract A combination seal and membrane tentering member suitable for use in an electrolytic cell of the filter press type. The seal/tentering member for a filter press type electrolytic cell includes an inflatable gasket member interposed between a first and second insulator members, said insulator members having a recess defining a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges and a membrane member interposed between the insulator members. Aqueous alkali metal chloride solution may be electrolyzed in the electrolytic cell.
Inventors
- 👤 Gregory J. E. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:58
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/73; H; H01; H01M; H01M8/00; H01M8/02; H01M8/0271; H01M8/0273; C25B9/77; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
A combination sealing means and tentering means for a filter press type electrolytic cell comprising: an inflatable gasket member interposed between a first and second insulator members, each insulator member having a recess such that when the insulators are assembled together define a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges and a membrane member interposed between the insulator members.
Claim 2
Dependent Claim
71 words
A combination sealing means and tentering means for a filter press type electrolytic cell comprising: an inflatable gasket member interposed between a first and second insulator members, each insulator member having a recess such that when the insulators are assembled together define a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges and a membrane member interposed between the insulator members.
Claim 3
Dependent Claim
24 words
The gasket of claim 1 including a means for removably fastening the membrane member to a surface portion of one of the insulator members.
Claim 4
Dependent Claim
28 words
The gasket of claim 1 including a recess portion in a first side wall of at least one of the insulator members adapted for receiving a seal member.
Claim 5
Dependent Claim
17 words
The gasket of claim 3 wherein the seal member is at least one O-ring type seal member.
Claim 6
Dependent Claim
18 words
A cell assembly comprising at least two frame members, a separator and a sealing means of claim 1.
Claim 7
Independent Claim
126 words
A method of sealing an electrolytic cell comprising (a) providing a seal/tentering member comprising an inflatable gasket member interposed between a first and second insulator members, said insulator members having a recess defining a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges; (b) fastening a sheet-like separator against at least one of the insulator members of the seal/tentering member: (c) interposing the seal/tentering member with separator between at least a first frame member and a second frame member, the separator spacing apart an anode and a cathode compartments defined by the first and second frame members and the separator: and (d) compressing the seal/tentering member with separator and the first and second frame members together.
Claim 8
Independent Claim
126 words
A method of sealing an electrolytic cell comprising (a) providing a seal/tentering member comprising an inflatable gasket member interposed between a first and second insulator members, said insulator members having a recess defining a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges; (b) fastening a sheet-like separator against at least one of the insulator members of the seal/tentering member: (c) interposing the seal/tentering member with separator between at least a first frame member and a second frame member, the separator spacing apart an anode and a cathode compartments defined by the first and second frame members and the separator: and (d) compressing the seal/tentering member with separator and the first and second frame members together.
Claim 9
Independent Claim
159 words
A method of operating an electrolytic cell comprising (a) providing a seal/tentering member comprising an inflatable gasket member interposed between a first and second insulator members, said insulator members having a recess defining a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges; (b) fastening a sheet-like separator against at least one of the insulator members of the seal/tentering member; (c) interposing the seal/tentering member with separator between at least a first frame member and a second frame member, the separator spacing apart an anode and a cathode compartments defined by the first and second frame members and the separator; and (d) compressing the seal/tentering member with separator and the first and second frame members together; (e) feeding an aqueous alkali metal halide solution to the electrolytic cell; and (f) passing an electrical current from the anode to the cathode such that a halide is evolved at the anode.
Claim 10
Independent Claim
159 words
A method of operating an electrolytic cell comprising (a) providing a seal/tentering member comprising an inflatable gasket member interposed between a first and second insulator members, said insulator members having a recess defining a compartment adapted for receiving the inflatable gasket member, said insulator members interposed between a pair of cell frame flanges; (b) fastening a sheet-like separator against at least one of the insulator members of the seal/tentering member; (c) interposing the seal/tentering member with separator between at least a first frame member and a second frame member, the separator spacing apart an anode and a cathode compartments defined by the first and second frame members and the separator; and (d) compressing the seal/tentering member with separator and the first and second frame members together; (e) feeding an aqueous alkali metal halide solution to the electrolytic cell; and (f) passing an electrical current from the anode to the cathode such that a halide is evolved at the anode.
Claim 11
Dependent Claim
79 words
An assembly for a filter press type electrolytic cell comprising (a) at least two adjacent insulation members interposed between two electrolytic cell frame members, said insulation members having a recess therein defining a compartment when contacting each other for receiving an inflatable gasket member; (b) a fluid-inflatable gasket member interposed between the two adjacent insulation members within the compartment; and (c) a means for passing fluid in or out of said gasket for inflating or deflating said gasket member.
Claim 12
Dependent Claim
79 words
An assembly for a filter press type electrolytic cell comprising (a) at least two adjacent insulation members interposed between two electrolytic cell frame members, said insulation members having a recess therein defining a compartment when contacting each other for receiving an inflatable gasket member; (b) a fluid-inflatable gasket member interposed between the two adjacent insulation members within the compartment; and (c) a means for passing fluid in or out of said gasket for inflating or deflating said gasket member.
Claim 13
Dependent Claim
20 words
The cell assembly of claim 8 wherein insulators are diametrically opposed and "C-shaped" in configuration when viewed in cross section.
Claim 14
Dependent Claim
24 words
The cell assembly of claim 8 wherein at least one of the insulator members includes a flange portion for releasably fastening a membrane thereto.
Claim 15
Dependent Claim
18 words
The cell assembly of claim 10 including a means for releasably fastening a membrane to the flange portion.
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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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |