US3853738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimensionally stable anode construction
Assignee: Electronor Corp
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Filing: 1972-10-02
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Granted: 1974-12-10
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Expires: 1992-10-02
Abstract
Abstract Describes dimensionally stable anodes made of a valve metal (titanium) for electrolytic cells, for the electrolysis of brine solutions and other electrolytes, having lead-in conductors of high conductivity (copper) and inverted U-shaped distributor conductors of valve metal (titanium) extending substantially the length of the anode working face in one direction and of sufficient width and being equally distributed along the anode working face in the other direction to distribute current uniformly over the anode working face, the anode working face being made of valve metal and covered with an electrocatalytic coating capable of catalyzing halogen ion discharge without becoming passivated over long periods of time.
Inventors
- 👤 R Loftfield
- 👤 R Jhaveri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:34
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/02; C25B11/03; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
143 words
A DIMENSIONALLY STABLE ANODE FOR USE IN A FLOWING MERCURY CATHODE ELECTROLYSIS CELL COMPRISING A PLANAR MESH ANODE MADE OF A VALVE METAL PROVIDED WITH AN ELECTRICALLY CONDUCTIVE, ELECTROCATALYTIC COATING ON THE WORKING ANODE FACE, AT LEAST ONE LATERALLY INVERTED, U-SHAPED CONDUCTING BAR OPEN AT BOTH ENDS CONNECTED BY THE INTEGRAL LEGS OF THE BAR TO THE MESH ANODE AND EXTENDING SUBSTANTIALLY FROM END TO END OF THE WORKING FACE, THE LEGS OF THE CONDUCTOR BAR BEING EQUALLY SPACED LATERALLY ALONG THE ANODE FACE IN THE OTHER DIRECTION SO THE DISTANCE BETWEEN THE CENTER LINE AND EACH LEG IS EQUAL AND THE DISTANCE BETWEEN THE LATERALLY PARALLEL BARS IS TWICE THE DISTANCE BETWEEN THE CENTER LINE AND EACH LEG TO PROVIDE UNIFORM LONGITUDINAL DISTRIBUTION OF CURRENT ON THE ANODE FACE, AND MEANS ON SAID CONDUCTOR BAR FOR A DETACHABLE CONNECTION TO ELECTRICAL LEAD-INS.
Claim 2
Dependent Claim
143 words
A DIMENSIONALLY STABLE ANODE FOR USE IN A FLOWING MERCURY CATHODE ELECTROLYSIS CELL COMPRISING A PLANAR MESH ANODE MADE OF A VALVE METAL PROVIDED WITH AN ELECTRICALLY CONDUCTIVE, ELECTROCATALYTIC COATING ON THE WORKING ANODE FACE, AT LEAST ONE LATERALLY INVERTED, U-SHAPED CONDUCTING BAR OPEN AT BOTH ENDS CONNECTED BY THE INTEGRAL LEGS OF THE BAR TO THE MESH ANODE AND EXTENDING SUBSTANTIALLY FROM END TO END OF THE WORKING FACE, THE LEGS OF THE CONDUCTOR BAR BEING EQUALLY SPACED LATERALLY ALONG THE ANODE FACE IN THE OTHER DIRECTION SO THE DISTANCE BETWEEN THE CENTER LINE AND EACH LEG IS EQUAL AND THE DISTANCE BETWEEN THE LATERALLY PARALLEL BARS IS TWICE THE DISTANCE BETWEEN THE CENTER LINE AND EACH LEG TO PROVIDE UNIFORM LONGITUDINAL DISTRIBUTION OF CURRENT ON THE ANODE FACE, AND MEANS ON SAID CONDUCTOR BAR FOR A DETACHABLE CONNECTION TO ELECTRICAL LEAD-INS.
Claim 3
Dependent Claim
29 words
The anode of claim 1, in which the inverted U-shaped conducting bars are of massive titanium and have gas escape holes therein and the anode is made of titanium.
Claim 4
Dependent Claim
43 words
The anode of claim 1, in which lead-in conductors are connected to the conductor bar and liquid and gas-proof sleeves surround and are spaced from the lead-in conductors inside the cell and extend between the inverted U-shaped conducting bars and the cell cover.
Claim 5
Dependent Claim
19 words
The anode of claim 3, in which the inverted U-shape conducting bars and the anode working face are titanium.
Claim 6
Dependent Claim
16 words
The anode of claim 2, in which the anode working face has a semi-conducting coating thereon.
Claim 7
Dependent Claim
48 words
The anode of claim 3, in which the sleeves are titanium and are separate from the inverted U-shaped conducting bars and have a flange making a liquid and gas-proof seal with the cell cover and a base making a liquid proof seal with the inverted U-shaped conducting bars.
Claim 8
Dependent Claim
36 words
The anode of claim 4, in which the inverted U-shaped conducting bars have bosses thereon for securing the lead-in conductors thereto and holes for the escape of gas bubbles released beneath the inverted U-shaped conductor bars.
Claim 9
Dependent Claim
39 words
The anode of claim 1, in which the legs of the inverted U-shaped conducting bars are flanged and the flanges are notched to permit relative movement of one part of the flange relative to the other for levelling adjustment.
Claim 10
Dependent Claim
27 words
The anode of claim 7, in which internally threaded titanium bosses are secured to the inverted U-shaped conducting bars for detachable connection with electrical lead in conductors.
Claim 11
Dependent Claim
100 words
An anode assembly for electrolytic cells which comprises a titanium sleeve having a flat titanium closure attached in fluid-tight manner across one end, a current lead-in rod at least partially within the sleeve and coaxial therewith having one end in contact with the titanium closure, and a foraminate titanium structure carrying on at least a part of its surface a coating comprising an operative electrode material, the said foraminate titanium structure lying in a plane parallel to the said titanium closure and being electrically connected thereby by titanium members which, together with the said closure, define an inverted channel shape.
Claim 12
Dependent Claim
100 words
An anode assembly for electrolytic cells which comprises a titanium sleeve having a flat titanium closure attached in fluid-tight manner across one end, a current lead-in rod at least partially within the sleeve and coaxial therewith having one end in contact with the titanium closure, and a foraminate titanium structure carrying on at least a part of its surface a coating comprising an operative electrode material, the said foraminate titanium structure lying in a plane parallel to the said titanium closure and being electrically connected thereby by titanium members which, together with the said closure, define an inverted channel shape.
Claim 13
Dependent Claim
33 words
An anode assembly according to claim 10, wherein the said titanium members and the titanium closure which together define an inverted channel shape have been fabricated from one integral piece of titanium metal.
Claim 14
Dependent Claim
24 words
An anode assembly according to claim 10, wherein the edges of the titanium channel shape are welded at intervals to the foraminate titanium structure.
Claim 15
Dependent Claim
25 words
An anode assembly according to claim 10, wherein the operative electrode material is selected from the group consisting of platinum group metals and oxides thereof.
Claim 16
Dependent Claim
35 words
An anode assembly according to claim 10, wherein the coating comprising an operative material consists of at least one oxide of at least one platinum group metal as the operative electrode material and titanium dioxide.
Claim 17
Dependent Claim
16 words
An anode assembly according to claim 14, wherein the said operative electrode material is ruthenium dioxide.
Claim 18
Dependent Claim
143 words
An anode assembly for electrolytic cells comprising: a downwardly-facing, open-ended, horizontally-elongated titanium channel member having a web portion and two depending flange portions integral with the web portion: a titanium sleeve secured at one end to said web portion in a fluid-tight manner so that said web portion closes said end, said web portion having at least one gas escape opening therethrough located intermediate said tube and each end of said channel: a current lead-in rod of smaller diameter than said sleeve at least partially within said sleeve coaxially therewith having one end in contact with said web portion: and a foraminate titanium structure lying in a plane parallel to said web portion and electrically connected to the lower edges of the flange portions, said foraminate structure carrying on at least a part of its surface a coating comprising an operative electrode material.
Claim 19
Dependent Claim
143 words
An anode assembly for electrolytic cells comprising: a downwardly-facing, open-ended, horizontally-elongated titanium channel member having a web portion and two depending flange portions integral with the web portion: a titanium sleeve secured at one end to said web portion in a fluid-tight manner so that said web portion closes said end, said web portion having at least one gas escape opening therethrough located intermediate said tube and each end of said channel: a current lead-in rod of smaller diameter than said sleeve at least partially within said sleeve coaxially therewith having one end in contact with said web portion: and a foraminate titanium structure lying in a plane parallel to said web portion and electrically connected to the lower edges of the flange portions, said foraminate structure carrying on at least a part of its surface a coating comprising an operative electrode material.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |