US3885989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal battery
Assignee: United States Department of Energy
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Filing: 1974-05-30
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Granted: 1975-05-27
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Expires: 1994-05-30
Abstract
Abstract An improved thermal battery of the type which includes an electrically conductive heat generating disc, a calcium anode, a depolarizer-binder-electrolyte (DEB) mixture pellet positioned within each electrochemical cell and each cell includes calcium hydroxide mixed in the DEB pellet.
Inventors
- 👤 Donald M Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
A LONG-LIFE THERMAL BATTERY COMPRISING A CASING; A PLURALITY OF ELECTROCHEMICAL CELLS IN SAID CASING, EACH CELL INCLUDING A CALCIUM ANODE DISC, AN ELECTRICALLY CONDUCTIVE HEAT GENERATING DISC, AND A NORMAL SOLID FUSIBLE ELECTROLYTE DISC SANDWICHED BETWEEN SAID ANODE AND HEAT GENERATING DISCS, SAID ELECTROLYTE DISC INCLUDING A HOMOGENEOUS MIXTURE OF A CALCIUM
Claim 2
Dependent Claim
53 words
A LONG-LIFE THERMAL BATTERY COMPRISING A CASING; A PLURALITY OF ELECTROCHEMICAL CELLS IN SAID CASING, EACH CELL INCLUDING A CALCIUM ANODE DISC, AN ELECTRICALLY CONDUCTIVE HEAT GENERATING DISC, AND A NORMAL SOLID FUSIBLE ELECTROLYTE DISC SANDWICHED BETWEEN SAID ANODE AND HEAT GENERATING DISCS, SAID ELECTROLYTE DISC INCLUDING A HOMOGENEOUS MIXTURE OF A CALCIUM
Claim 3
Dependent Claim
29 words
The thermal battery of claim 1 wherein said electrolyte mixture includes a mixture of about 41 w/o lithium chloride, 53 w/o potassium chloride, and about 6 w/o calcium hydroxide.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |