Patent US3914133A successfully refreshed from Google Patents.
US3914133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal battery
Assignee: United States Department of Energy
•
Filing: 1973-04-17
•
Granted: 1975-10-21
•
Expires: 1993-04-17
Abstract
Abstract An improved thermal battery which includes a depression at the interface of electrolyte pellet and anode for trapping of molten material therebetween.
Inventors
- 👤 Arlen R Baldwin
- 👤 Thomas A Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:16
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
A THERMAL BATTERY COMPRISING A CASING, A PLURALITY OF ELECTROCHEMICAL CELLS STACKED IN SAID CASING, EACH CELL INCLUDING AN ANODE DISC, AN ELECTRICALLY CONDUCTIVE HEAT GENERATING DISC, AND A NORMALLY SOLID FUSIBLE ELECTROLYTE DISC SANDWICHED BETWEEN SAID ANODE AND HEAT GENERATING DISCS IN DIRECT CONTACT WITH SAID ANODE OBER SUBSTANTIAL PORTION OF THEIR ADJACENT SURFACES, AT LEAST ONE OF SAID ANODE AND ELECTROLYTE DISCS BEING PROVIDED WITH DEPRESSED PORTION ST INTERFACE BETWEEN SAID ANODE AND ELECTROLYTE DISCS AND SPACED RADIALY INWARD FROM PERIPHERAL PORTIIONS OF SAID DISCS, THE DEPRESSED PERTION BEING DOSPOSED CIRCUMFERENTIALLY SBOUT THE INTEFACE FOR TRAPPING AND INHIBITING MOVEMENT OF MOLTEN MATERIALS, FORMED AT SAID
Claim 2
Dependent Claim
107 words
A THERMAL BATTERY COMPRISING A CASING, A PLURALITY OF ELECTROCHEMICAL CELLS STACKED IN SAID CASING, EACH CELL INCLUDING AN ANODE DISC, AN ELECTRICALLY CONDUCTIVE HEAT GENERATING DISC, AND A NORMALLY SOLID FUSIBLE ELECTROLYTE DISC SANDWICHED BETWEEN SAID ANODE AND HEAT GENERATING DISCS IN DIRECT CONTACT WITH SAID ANODE OBER SUBSTANTIAL PORTION OF THEIR ADJACENT SURFACES, AT LEAST ONE OF SAID ANODE AND ELECTROLYTE DISCS BEING PROVIDED WITH DEPRESSED PORTION ST INTERFACE BETWEEN SAID ANODE AND ELECTROLYTE DISCS AND SPACED RADIALY INWARD FROM PERIPHERAL PORTIIONS OF SAID DISCS, THE DEPRESSED PERTION BEING DOSPOSED CIRCUMFERENTIALLY SBOUT THE INTEFACE FOR TRAPPING AND INHIBITING MOVEMENT OF MOLTEN MATERIALS, FORMED AT SAID
Claim 3
Dependent Claim
14 words
The battery of claim 1 wherein said depressed portions are of generally annular form.
Claim 4
Dependent Claim
19 words
The battery of claim 2 where said depressed portions are in the form of one or more concentric rings.
Claim 5
Dependent Claim
24 words
The battery of claim 2 wherein said depressed portions are in the form of a spiral expanding from near the center of said discs.
Claim 6
Dependent Claim
14 words
The battery of claim 1 including a plurality of depressed portions in said discs.
Claim 7
Dependent Claim
34 words
The battery of claim 5 wherein each of said depressed portions are circular in shape in a regular pattern about said discs, with at least one circular depression intersecting every radius of said discs.
Claim 8
Dependent Claim
28 words
The battery of claim 1 wherein said depressions occupy a volume of from about 0.001 to about 0.002 cubic inches per square inch of a disc surface area.
Claim 9
Dependent Claim
56 words
The battery of claim 1 wherein said anode is calcium, said electrolyte disc is a three component mixture of depolarizer, electrolyte and binder and said depolarizer is clacium chromate, said electrolyte is a eutectic composition of potassium chloride and lithium chloride, said binder is silicon dioxide, and said heat generating disc is iron and potassium perchlorate.
References Cited (Backward Citations)
US3533844A
Cited
US3677822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |