US4053685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End-reacting electrochemical battery
Assignee: Lockheed Martin Corp
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Filing: 1974-05-15
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Granted: 1977-10-11
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Expires: 1994-05-15
Abstract
Abstract In a reactive metal-water electrochemical battery, means for minimizing the destructive erosion of the reactive metal anode material on those anode surfaces not being actively employed in the operation of the battery. More particularly, in one embodiment, the non-working anode surfaces are maintained in intimate relationship with the battery casing to prevent the eroding electrolyte from contacting the non-working surfaces. In another embodiment, the electrolyte is confined to the working surface of the anode by means of flexible seals which protect the non-working surfaces.
Inventors
- 👤 Leroy S. Rowley
- 👤 Harry J. Halberstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:33
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/26; H01M12/00; H01M12/04; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
In a reactive metal anode-aqueous electrolyte electrochemical battery wherein said anode is mounted in a battery casing and naturally forms on its surface a protective insulating film in the presence of water, the improvement wherein: a. said protective insulating film includes at least a portion thereof comprising a reactive surface, b. a cathode in direct contact with substantially the entire reactive surface, c. means preventing said electrolyte from contacting any portion of said anode other than said reactive surface, thereby minimizing destructive erosion of said anode by said electrolyte in a non-power producing area of said electrolyte wherein said preventing means comprises said battery casing said battery case being in intimate and fixed direct contact with all surface portions of said anode other than said reactive surface, and d. means for maintaining said cathode in direct contact with said anode as said anode is consumed, said cathode being freely movable with and following the receding anode reactive surface for maintaining direct contact between said reactive surface and said cathode.
Claim 2
Dependent Claim
169 words
In a reactive metal anode-aqueous electrolyte electrochemical battery wherein said anode is mounted in a battery casing and naturally forms on its surface a protective insulating film in the presence of water, the improvement wherein: a. said protective insulating film includes at least a portion thereof comprising a reactive surface, b. a cathode in direct contact with substantially the entire reactive surface, c. means preventing said electrolyte from contacting any portion of said anode other than said reactive surface, thereby minimizing destructive erosion of said anode by said electrolyte in a non-power producing area of said electrolyte wherein said preventing means comprises said battery casing said battery case being in intimate and fixed direct contact with all surface portions of said anode other than said reactive surface, and d. means for maintaining said cathode in direct contact with said anode as said anode is consumed, said cathode being freely movable with and following the receding anode reactive surface for maintaining direct contact between said reactive surface and said cathode.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |