US4110516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium-sulfur cell casing
Assignee: Electric Power Research Institute
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Filing: 1977-06-15
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Granted: 1978-08-29
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Expires: 1997-06-15
Abstract
Abstract An improved hermetically sealed sodium-sulfur cell casing formed as a container of metal, the interior side wall of the container being characterized by an electrically conducting corrosion resistant electrolytically applied layer of material. Preferably the metal of the container comprises aluminum and the layer is chromium. A second embodiment includes a layer of electrolytically applied zinc to the aluminum and a layer of chromium electrolytically applied to the zinc layer.
Inventors
- 👤 Manfred W. Breiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:39
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/661; H01M50/00; H01M50/10; H01M50/116; H01M50/117; H01M50/119; H01M50/124; H01M50/126; H01M50/128; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
In a sodium-sulfur cell assembly a hermetically sealed sulfur cell casing comprising a container of aluminum, the interior side wall of said container being pre-etched and characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium overlying the pre-etched aluminum wall.
Claim 2
Dependent Claim
43 words
In a sodium-sulfur cell assembly a hermetically sealed sulfur cell casing comprising a container of aluminum, the interior side wall of said container being pre-etched and characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium overlying the pre-etched aluminum wall.
Claim 3
Dependent Claim
72 words
In a sodium-sulfur cell assembly a hermetically sealed sulfur cell casing comprising a container of aluminum, the interior side wall of said container being characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium, and an intermediate precoating layer of electrically conducting and electrolytically applied zinc interposed between the chromium layer and the interior aluminum sidewall of said container for supporting the chromium layer from the intermediate layer of zinc.
Claim 4
Dependent Claim
72 words
In a sodium-sulfur cell assembly a hermetically sealed sulfur cell casing comprising a container of aluminum, the interior side wall of said container being characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium, and an intermediate precoating layer of electrically conducting and electrolytically applied zinc interposed between the chromium layer and the interior aluminum sidewall of said container for supporting the chromium layer from the intermediate layer of zinc.
Claim 5
Dependent Claim
90 words
In a sodium-sulfur cell construction having first and second containers co-axially disposed to hold bodies of first and second corrosive materials in spaced apart relation, one of said containers comprising a hermetically sealed sulfur cell casing, an end closure therein, a flow passage defined therethrough for charging said casing with a body of sulfur, said casing comprising a container of aluminum, the interior sidewall of said container being pre-etched and characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium overlying the pre-etched aluminum wall of said container.
Claim 6
Dependent Claim
90 words
In a sodium-sulfur cell construction having first and second containers co-axially disposed to hold bodies of first and second corrosive materials in spaced apart relation, one of said containers comprising a hermetically sealed sulfur cell casing, an end closure therein, a flow passage defined therethrough for charging said casing with a body of sulfur, said casing comprising a container of aluminum, the interior sidewall of said container being pre-etched and characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium overlying the pre-etched aluminum wall of said container.
Claim 7
Dependent Claim
116 words
In a sodium-sulfur cell construction having first and second containers co-axially disposed to hold bodies of first and second corrosive materials in spaced apart relation, one of said containers comprising a heremetically sealed sulfur cell casing, an end closure applied thereto, a flow passage defined therethrough for charging said casing with a body of sulfur, said casing comprising a container of aluminum, the interior sidewall of said container being characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium, and an intermediate pre-coating layer of electrically conducting and electrolytically applied zinc interposed between the chromium layer and the aluminum sidewall of said container for supporting the chromium layer from the intermediate layer of zinc.
Claim 8
Dependent Claim
116 words
In a sodium-sulfur cell construction having first and second containers co-axially disposed to hold bodies of first and second corrosive materials in spaced apart relation, one of said containers comprising a heremetically sealed sulfur cell casing, an end closure applied thereto, a flow passage defined therethrough for charging said casing with a body of sulfur, said casing comprising a container of aluminum, the interior sidewall of said container being characterized by an electrically conducting corrosion resistant electrolytically applied layer of chromium, and an intermediate pre-coating layer of electrically conducting and electrolytically applied zinc interposed between the chromium layer and the aluminum sidewall of said container for supporting the chromium layer from the intermediate layer of zinc.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |