US4675257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron-lithium anode for thermal battery
Assignee: Saft America Inc
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Filing: 1983-11-21
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Granted: 1987-06-23
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Expires: 2003-11-21
Abstract
Abstract An improved lithium anode for thermal batteries wherein a metal screen is positioned between and substantially co-extensive with an anode composite comprising lithium and a particulate metal and a metal collector or cup positioned in contact with said composite.
Inventors
- 👤 Clinton S. Winchester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:35
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/06; H01M4/08; H01M4/12; H01M6/00; H01M6/30; H01M6/36
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
91 words
In a lithium anode for use in a thermal battery having a composite material comprising lithium and a particulate metal capable of being wetted by molten lithium, but only slightly or not alloyable with said lithium, said composite anode material being positioned adjacent a metal collector element the improvement therewith comprising: a metal screen being positioned between and substantially co-extensive with said anode composite and the metal collector element, whereby said anode is thereby spaced apart from said element but is in electrical contact therewith and said screen is electrically conductive.
Claim 2
Dependent Claim
91 words
In a lithium anode for use in a thermal battery having a composite material comprising lithium and a particulate metal capable of being wetted by molten lithium, but only slightly or not alloyable with said lithium, said composite anode material being positioned adjacent a metal collector element the improvement therewith comprising: a metal screen being positioned between and substantially co-extensive with said anode composite and the metal collector element, whereby said anode is thereby spaced apart from said element but is in electrical contact therewith and said screen is electrically conductive.
Claim 3
Dependent Claim
12 words
A thermal battery having a lithium anode as claimed in claim 1.
Claim 4
Dependent Claim
25 words
A lithium anode as claimed in claim 1 wherein said particulate matter is selected from the group consisting of iron, stainless steel, nickel and nickelchrome.
Claim 5
Dependent Claim
25 words
A lithium anode as claimed in claim 1 in which said particulate metal is present in an amount of from 70% to 85% by weight.
Claim 6
Dependent Claim
25 words
A lithium anode as set forth in claim 1 wherein said metal collector element comprises a metal cup wherein said composite anode material is postioned.
Claim 7
Dependent Claim
32 words
A lithium anode as set forth in claims 1, 2 or 5 where said lithium anode has a center-hole adapted after assembly in a stacked array for receiving a solid fuse material.
Claim 8
Dependent Claim
13 words
An improved thermal battery having the lithium anode as claimed in claim 3.
Claim 9
Dependent Claim
13 words
An improved thermal battery having the lithium anode as claimed in claim 4.
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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |