Patent US4078986A successfully refreshed from Google Patents.
US4078986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic diaphragm cells
Assignee: Imperial Chemical Industries Ltd
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Filing: 1976-01-27
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Granted: 1978-03-14
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Expires: 1996-01-27
Abstract
Abstract An anode assembly for an electrolytic cell comprising a base plate of an electrically-conductive metal which is resistant to the electrolyte used in the cell, a plurality of metal anodes mounted on and attached in electrical contact with the upper surface of the base plate and a current lead-in member or members electrically and mechanically bonded to the under surface of the base plate by means of a plurality of electrically-conducting stud members each of which is connected by welding at one end to the under surface of the base plate and is connected at the other end by welding or other means to said current lead-in member or members.
Inventors
- 👤 Frank Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:41
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/65
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
In a diaphragm cell for the electrolysis of aqueous solutions of alkali metal halides the improvement consisting of an anode assembly comprising a single-thickness base plate of an electrolyte resistant conductive metal having a plurality of metal anodes mounted on and electrically connected to the upper surface of the base plate and current lead-in means electrically and mechanically bonded to the under-surface of the base plate by means of a plurality of electrically conducting stud members each of which is connected by welding at one end to the under surface of the base plate and is connected at the other end to said current lead-in means.
Claim 2
Dependent Claim
106 words
In a diaphragm cell for the electrolysis of aqueous solutions of alkali metal halides the improvement consisting of an anode assembly comprising a single-thickness base plate of an electrolyte resistant conductive metal having a plurality of metal anodes mounted on and electrically connected to the upper surface of the base plate and current lead-in means electrically and mechanically bonded to the under-surface of the base plate by means of a plurality of electrically conducting stud members each of which is connected by welding at one end to the under surface of the base plate and is connected at the other end to said current lead-in means.
Claim 3
Dependent Claim
23 words
A cell as in claim 1 wherein said stud members are bonded to the under surface of the base plate by friction welding.
Claim 4
Dependent Claim
24 words
A cell as in claim 1 wherein said stud members are bonded to the under surface of the base plate by capacitor discharge welding.
Claim 5
Dependent Claim
20 words
A cell as in claim 1 wherein the base plate is made from metal selected from titanium and titanium alloys.
Claim 6
Dependent Claim
30 words
A cell as in claim 1 wherein the current lead-in means and the stud members are made of metal selected from the group consisting of copper, aluminum, steel and titanium.
Claim 7
Dependent Claim
17 words
A cell as in claim 1 wherein the current lead-in means is a rigid sheet of metal.
Claim 8
Dependent Claim
26 words
A cell as in claim 1 wherein the current lead-in means is a series of parallel strips of metal each associated with a row of studs.
Claim 9
Dependent Claim
27 words
A cell as in claim 1 wherein the current lead-in means is a series of thin flexible sheets of metal each associated with a row of studs.
Claim 10
Dependent Claim
40 words
A cell as in claim 1 wherein the anode assembly includes a series of spaced parallel anode support members welded to the upper surface of the base plate, each of said support members having a plurality of anodes welded thereto.
Claim 11
Dependent Claim
14 words
A cell as in claim 9 wherein the anode support members are titanium ribs.
Claim 12
Dependent Claim
14 words
A cell as in claim 9 wherein the anode support members are titanium studs.
Claim 13
Dependent Claim
22 words
A cell as in claim 11 wherein the anode support studs are friction welded to the upper surface of the base plate.
Claim 14
Dependent Claim
23 words
A cell as in claim 11 wherein the anode support studs are capacitor discharge welded to the upper surface of the base plate.
References Cited (Backward Citations)
US3598715A
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US3591483A
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US3719578A
Cited
US3954593A
Cited
US3891531A
Cited
US3963595A
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US3963596A
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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) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |