US4332864A
Expired / Lapsed
US
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Primary electric cell having magnesium alloy anode
Assignee: Magnesium Elektron Ltd
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Filing: 1980-09-17
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Granted: 1982-06-01
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Expires: 2000-09-17
Abstract
Abstract A magnesium alloy contains the following additives: A1 1-9%, Zn 0-4%, Sn 0.1-5%, Mn 0-1%. It is useful as an anode in cells operating with a salt water electrolyte, especially in batteries powering equipment for deep-sea use in which a pulsed power source is required.
Inventors
- 👤 John F. King
- 👤 Stephen L. Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:58
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/46; C; C22; C22C; C22C23/00; C22C23/02; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
34 words
An electric primary cell having an anode made of a magnesium alloy containing the following constituents by weight, apart from normal impurities: ______________________________________
Al 1-9%
Zn 0-4%
Sn 0.1-5%
Mn 0-1%
Mg Remainder.
______________________________________
Claim 2
Dependent Claim
34 words
An electric primary cell having an anode made of a magnesium alloy containing the following constituents by weight, apart from normal impurities: ______________________________________
Al 1-9%
Zn 0-4%
Sn 0.1-5%
Mn 0-1%
Mg Remainder.
______________________________________
Claim 3
Dependent Claim
24 words
A cell according to claim 1, said alloy containing the following constituents by weight: ______________________________________
Al 4-7%
Zn 0-1%
Sn 0.25-3%
Mn 0-0.3%.
______________________________________
Claim 4
Dependent Claim
22 words
A cell according to claim 2, said alloy containing the following constituents by weight: ______________________________________
Al 5.5-6.5%
Zn 0.5-1.0%
Sn 0.5-1.5%.
______________________________________
Claim 5
Dependent Claim
14 words
A cell according to one of claims 1-3 comprising salt water as the electrolyte.
Claim 6
Dependent Claim
16 words
A cell according to claim 4, in which the cathode comprises silver chloride or lead chloride.
Claim 7
Dependent Claim
18 words
Electrically powered apparatus for underwater use, comprising a cell according to any one of claims 1 to 3.
Claim 8
Dependent Claim
12 words
Apparatus according to claim 6, of a type requiring pulsed electric power.
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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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |