US4179799A
Expired / Lapsed
US
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Method of molding a double cathode having a sensing grid for a porous electrode primary battery
Assignee: United States Department of the Air Force
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Filing: 1978-04-17
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Granted: 1979-12-25
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Expires: 1998-04-17
Abstract
Abstract In a porous electrode primary battery a sensing grid is positioned in a cell on or near the surface of the porous cathode facing the separator and anode. The voltage measured between this sensing grid and the conventional cathode current collector grid is a function of the current distribution within the electrode which is continuously changing as the battery discharges, thus the measured voltage is indicative of the state of charge of the particular cell having the sensing grid and for a battery containing cooperatively connected cells, the state of the battery in general.
Inventors
- 👤 David H. Fritts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:46
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/50; H01M6/5005; H01M10/00; H01M10/42; H01M10/48; H01M4/00; H01M4/86; H01M4/96; H01M6/14; H01M6/5044; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
The method of molding a double cathode having a sensing grid for a porous electrode primary battery comprising: a. placing a relatively thin first carbon slurry in a mold; b. placing a charge sensing grid on the said first carbon slurry; c. placing a second carbon slurry in the mold over the said sensing grid; d. placing a current collecting grid on the said second slurry; e. placing a third slurry over the said current collecting grid forming the said double cathode; and f. curing the said double cathode.
Claim 2
Independent Claim
89 words
The method of molding a double cathode having a sensing grid for a porous electrode primary battery comprising: a. placing a relatively thin first carbon slurry in a mold; b. placing a charge sensing grid on the said first carbon slurry; c. placing a second carbon slurry in the mold over the said sensing grid; d. placing a current collecting grid on the said second slurry; e. placing a third slurry over the said current collecting grid forming the said double cathode; and f. curing the said double cathode.
References Cited (Backward Citations)
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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) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |