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US4207165A Expired / Lapsed US ⏱️ 0.0 years remaining

Filter press cell

Assignee: Occidental Chemical Corp
•
Filing: 1979-05-17
•
Granted: 1980-06-10
•
Expires: 1999-05-17
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Abstract

Abstract An improved electrolytic cell of the filter press type in which the electrode gap may initially be set and accurately maintained during assembly of the cell units is described. The cell units consist of a planar anode mounted in a peripheral anode frame, a planar cathode mounted in a peripheral cathode frame, a barrier, such as a diaphragm or membrane, positioned between the anode and cathode, a spacer member and at least one gasket member positioned between the edges of the anode and cathode frames. The total gasket width in an uncompressed state is greater than the thickness of the spacer member. Upon assembly of the unit, the gasket member is compressed forming a gas and liquid seal. The thickness of the spacer member determines the space between the anode and cathode frame members and, consequently, the space or gap between the anodes and cathodes mounted in the frame members.

Inventors

  • 👤 Luciano Mose
  • 👤 Helmut Schurig
  • 👤 Bernd Strasser

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 18:54
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B9/73; C25B9/77

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 159 words
An electrolytic cell comprising: (a) a planar anode mounted in a peripheral frame member, the sides of said frame member having an inner and an outer portion, (b) a planar cathode mounted in a peripheral frame member, the sides of said frame member having an inner and an outer portion, (c) a permeable barrier positioned between said anode and said cathode, (d) a spacer member positioned between said frame members contiguous their said outer portions, (e) at least one hollow gasket member positioned between said frame members contiguous their said inner portions, said hollow gasket members having a total width in the uncompressed state greater than the width of said spacer member, (f) means for compressing and holding said frame members in a coupled state forming a cell unit, (g) means for adding electrolyte and removing electrolysis products from said cell unit, and (h) means for connecting said anode and said cathode members to a source of electrolyzing current.
Claim 2
Dependent Claim 159 words
An electrolytic cell comprising: (a) a planar anode mounted in a peripheral frame member, the sides of said frame member having an inner and an outer portion, (b) a planar cathode mounted in a peripheral frame member, the sides of said frame member having an inner and an outer portion, (c) a permeable barrier positioned between said anode and said cathode, (d) a spacer member positioned between said frame members contiguous their said outer portions, (e) at least one hollow gasket member positioned between said frame members contiguous their said inner portions, said hollow gasket members having a total width in the uncompressed state greater than the width of said spacer member, (f) means for compressing and holding said frame members in a coupled state forming a cell unit, (g) means for adding electrolyte and removing electrolysis products from said cell unit, and (h) means for connecting said anode and said cathode members to a source of electrolyzing current.
Claim 3
Dependent Claim 16 words
The cell of claim 1 wherein the spacer member is in the form of a frame.
Claim 4
Dependent Claim 11 words
The cell of claim 1 wherein the barrier material is asbestos.
Claim 5
Dependent Claim 13 words
The cell of claim 1 wherein the barrier material is a permselective membrane.
Claim 6
Dependent Claim 23 words
The cell of claim 4 wherein the spacer member is in the form of a frame in which the permselective membrane is mounted.
Claim 7
Dependent Claim 15 words
The cell of claim 1 wherein the spacer member is fabricated of a non-conductive plastic.
Claim 8
Dependent Claim 28 words
The cell of claim 1 wherein the spacer member is metallic and at least one of said anode and cathode frame members is fabricated of a non-conductive plastic.

References Cited (Backward Citations)

US4026782A Cited
US4076609A Cited
US4013535A Cited
DE2827360A1 Cited
US4129495A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-06-10 1983-12-10 1984-06-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-06-10 1987-12-10 1988-06-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-06-10 1991-12-10 1992-06-10 $7700.00 Window Closed / Lapsed

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