US4132622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar electrode
Assignee: Occidental Chemical Corp
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Filing: 1977-11-30
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Granted: 1979-01-02
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Expires: 1997-11-30
Abstract
Abstract A hollow bipolar electrode is provided which comprises an anode member and a cathode member. Each member has a base structure and a plurality of removably attached blades or plates extending from the active surfaces of the base structures. The blades or plates are arranged to intermesh when the elctrodes are arranged in a cell. In a preferred embodiment the blades are comprised of a plurality of nested U-shaped sheets.
Inventors
- 👤 Edward J. Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:52
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A bipolar electrode comprising an anode member and a cathode member, each of said members formed of a non-foraminous metal, each of said members having a base structure and a plurality of blades removeably attached to the active face thereof, said blades positioned to intermesh with each other upon assembly in a cell, said anode and cathode members being joined together in an electrically conductive unit, at least one of said members having a concave portion which when the members are joined together forms a hollowed section in the interior of said electrode, and, at least one gas vent between the interior of said hollow section and the exterior of said electrode, said vent or vents effecting the release of gases from the interior of said hollow section.
Claim 2
Dependent Claim
128 words
A bipolar electrode comprising an anode member and a cathode member, each of said members formed of a non-foraminous metal, each of said members having a base structure and a plurality of blades removeably attached to the active face thereof, said blades positioned to intermesh with each other upon assembly in a cell, said anode and cathode members being joined together in an electrically conductive unit, at least one of said members having a concave portion which when the members are joined together forms a hollowed section in the interior of said electrode, and, at least one gas vent between the interior of said hollow section and the exterior of said electrode, said vent or vents effecting the release of gases from the interior of said hollow section.
Claim 3
Dependent Claim
16 words
The electrode of claim 1 wherein said plurality of blades are formed by nested U-shaped sheets.
Claim 4
Dependent Claim
19 words
The electrode of claim 1 wherein the plurality of blades are removeably attached by means of a threaded connection.
Claim 5
Dependent Claim
46 words
The electrode of claim 1 wherein said anode member is substantially planar in configuration and the cathode member is joined thereto in electrically conductive contact only around its outer periphery, the central portion of said cathode member being concave with respect to said planar anode member.
Claim 6
Dependent Claim
32 words
The electrode of claim 4 wherein the anode member is formed of a valve metal and has an electrically conductive, anodically resistant coating on at least a portion of its exterior surface.
Claim 7
Dependent Claim
35 words
The electrode of claim 5 wherein the valve metal is selected from titanium, tantalum and niobium and the electrically conductive coating contains at least one material selected from platinum group metals and platinum group oxides.
Claim 8
Dependent Claim
28 words
The electrode of claim 1 wherein the cathode member is formed of a metal selected from iron, steel, chromium, cobalt, copper, lead, molybdenum, nickel, tungsten and alloys thereof.
Claim 9
Dependent Claim
11 words
The electrode of claim 7 wherein the cathode member is steel.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |