Patent US4039420A successfully refreshed from Google Patents.
US4039420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halate cell top
Assignee: Occidental Chemical Corp
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Filing: 1976-03-24
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Granted: 1977-08-02
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Expires: 1996-03-24
Abstract
Abstract An improved electolytic cell top for the manufacture of alkali metal halates is disclosed, wherein the cell top has a substantially improved useful life. A titanium liner forms the interior surface of the cell top, and material cost can be minimized by choosing a titanium thickness sufficient to withstand forces created by hydrostatic pressures of electrolyte and by the weight of the cell, when supported by the enclosing structure of the present invention.
Inventors
- 👤 Chester Ronald Nawrot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:36
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, the improvement comprising providing a titanium interior surface of said cell top, said titanium surface being electrically insulated from said cell bottom which functions as the cathode of said cell.
Claim 2
Dependent Claim
59 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, the improvement comprising providing a titanium interior surface of said cell top, said titanium surface being electrically insulated from said cell bottom which functions as the cathode of said cell.
Claim 3
Dependent Claim
16 words
The cell of claim 1 wherein said titanium surface is a titanium liner of unitary construction.
Claim 4
Dependent Claim
26 words
The cell of claim 1 wherein said titanium plate and said cell bottom are flanged and held together in electrolyte-tight engagement with an elastomeric spacing gasket.
Claim 5
Dependent Claim
18 words
The cell of claim 2 wherein said titanium liner is enclosed about its periphery by a supporting framework.
Claim 6
Dependent Claim
20 words
The cell of claim 4 wherein said titanium liner is between about 0.032 inches and about 0.5 inches in thickness.
Claim 7
Dependent Claim
73 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, wherein said cell bottom functions as the cathode of said cell, the improvement which comprises providing as the cell top a titanium liner enclosed about its periphery by a support framework having ribs projecting outwardly from said support framework in a substantially horizontal direction.
Claim 8
Dependent Claim
73 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, wherein said cell bottom functions as the cathode of said cell, the improvement which comprises providing as the cell top a titanium liner enclosed about its periphery by a support framework having ribs projecting outwardly from said support framework in a substantially horizontal direction.
Claim 9
Dependent Claim
26 words
The cell of claim 6 wherein said titanium liner and said cell bottom are flanged and held together in electrolyte-tight engagement with an elastomeric spacing gasket.
Claim 10
Dependent Claim
13 words
The cell of claim 7 wherein said alkali metal halate is sodium chlorate.
Claim 11
Dependent Claim
20 words
The cell of claim 7 wherein said titanium liner is between about 0.032 inches and about 0.5 inches in thickness.
Claim 12
Dependent Claim
18 words
The cell of claim 6 wherein said support framework comprises fiberglass-reinforced polyester resin with integral fiberglass-reinforced polyester ribs.
Claim 13
Dependent Claim
67 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, wherein said cell bottom functions as the cathode of said cell, the improvement which comprises providing as the cell top a titanium liner enclosed about its periphery by a grating held in place by supporting rigid metal members.
Claim 14
Dependent Claim
67 words
In an electrolytic cell for the manufacture of alkali metal halate, wherein said cell comprises a cell top joined to a cell bottom below the level of enclosed electrolyte, wherein said cell bottom functions as the cathode of said cell, the improvement which comprises providing as the cell top a titanium liner enclosed about its periphery by a grating held in place by supporting rigid metal members.
Claim 15
Dependent Claim
26 words
The cell of claim 11 wherein said titanium liner and said cell bottom are flanged and held together in electrolyte-tight engagement with an elastomeric spacing gasket.
Claim 16
Dependent Claim
20 words
The cell of claim 11 wherein said titanium liner is between about 0.032 inches and about 0.5 inches in thickness.
Claim 17
Dependent Claim
12 words
The cell of claim 11 wherein said grating is made of fiberglass.
Claim 18
Dependent Claim
14 words
The cell of claim 1 wherein the cell top is constructed entirely of titanium.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |