US4312737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for monopolar filter press cells
Assignee: Olin Corp
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Filing: 1980-04-25
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Granted: 1982-01-26
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Expires: 2000-04-25
Abstract
Abstract An electrode for a monopolar filter press cell comprises two vertical foraminous surfaces positioned in parallel and spaced apart. A frame having two side members, a top member, and a bottom member is attached to the foraminous surfaces. A chamber is formed between the foraminous surfaces and bounded by the frame. Conductor rods pass through one of the side members into the chamber; the conductor rods being spaced apart from the foraminous surfaces. The frame has inlets and outlets for introducing fluids into and removing electrolysis products from the chamber. The novel electrodes provide improved gas flow patterns by creating limited restrictions within the chamber so as to generate a Venturi or low pressure effect which pulls gases from the interelectrode gap through the electrode surfaces and into the chamber.
Inventors
- 👤 Morton S. Kircher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:02
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
136 words
An electrode for a monopolar filter press cell which comprises: (a) two vertical foraminous surfaces positioned in parallel and spaced apart, (b) a frame having two side members, a top member, and a bottom member attached to said foraminous surfaces, (c) a chamber formed between said foraminous surfaces and bounded by said frame, (d) conductor rods passing through one of said side members of said frame into said chamber, said conductor rods being spaced apart from said foraminous surfaces, (e) foraminous conductive connectors positioned in said chamber and attached to said conductor rods and to said foraminous surfaces, said foraminous conductive connectors being selected from the group consisting of "U", "V", semicircular, parabolic, elliptical, semioctagonal, or semirectangular, and (f) inlets and outlets in said frame for introducing fluids into and removing electrolysis products from said chamber.
Claim 2
Dependent Claim
136 words
An electrode for a monopolar filter press cell which comprises: (a) two vertical foraminous surfaces positioned in parallel and spaced apart, (b) a frame having two side members, a top member, and a bottom member attached to said foraminous surfaces, (c) a chamber formed between said foraminous surfaces and bounded by said frame, (d) conductor rods passing through one of said side members of said frame into said chamber, said conductor rods being spaced apart from said foraminous surfaces, (e) foraminous conductive connectors positioned in said chamber and attached to said conductor rods and to said foraminous surfaces, said foraminous conductive connectors being selected from the group consisting of "U", "V", semicircular, parabolic, elliptical, semioctagonal, or semirectangular, and (f) inlets and outlets in said frame for introducing fluids into and removing electrolysis products from said chamber.
Claim 3
Dependent Claim
13 words
The electrode of claim 1 in which said conductor rods are substantially horizontal.
Claim 4
Dependent Claim
36 words
The electrode of claim 2 in which said foraminous conductive connectors are comprised of a metal form selected from the group consisting of wire mesh, expanded metal mesh, perforated sheet, a slit sheet or louvered sheet.
Claim 5
Dependent Claim
25 words
The electrode of claim 2 in which said foraminous surfaces, said foraminous conductive connectors and said conductor rods are comprised of nickel or nickel alloys.
Claim 6
Dependent Claim
45 words
In a monopolar filter press cell for the electrolysis of salt solutions having a plurality of anodes and cathodes alternatingly interleaved and a cation exchange membrane between each anode and each cathode, the improvement which comprises employing as the cathodes the electrode of claim 4.
Claim 7
Dependent Claim
32 words
The electrode of claim 1 in which the configuration of said foraminous conductive connector is an inverted curve selected from the group consisting of "U", "V", semicircular, parabolic, elliptical, semioctagonal, or semirectangular.
Claim 8
Dependent Claim
25 words
The electrode of claim 1 or 5 in which both ends of said foraminous conductive connector are attached to one of said foraminous electrode surfaces.
Claim 9
Dependent Claim
25 words
The electrode of claim 1 or 5 in which one end of said foraminous conductive connector is attached to each of said two foraminous surfaces.
Claim 10
Dependent Claim
18 words
The electrode of claim 7 in which said foraminous conductive connectors are comprised of an expanded metal mesh.
Claim 11
Dependent Claim
18 words
The electrode of claim 9 having a height to width ratio of from about 500:1 to about 5:1.
Claim 12
Dependent Claim
22 words
The electrode of claim 7 in which said foraminous surfaces, said foraminous conductive connectors and said conductor rods are comprised of titanium.
Claim 13
Dependent Claim
44 words
In a monopolar filter press cell for the electrolysis of salt solutions having a plurality of anodes and cathodes alternatingly interleaved and a cation exchange membrane between each anode and each cathode, the improvement which comprises employing as anodes the electrode of claim 11.
Claim 14
Dependent Claim
29 words
The electrode of claim 1 in which said conductor rods have a first horizontal portion and a second sloped portion, said second sloped portion being positioned within said chamber.
Claim 15
Dependent Claim
32 words
The electrode of claim 1 in which the open area of said foraminous conductive connectors comprises from about 0.2 to about 2 times the interior horizontal cross sectional area of the electrode.
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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |