US4097654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal shunt for radioisotope thermoelectric generator-chemical battery hybrid configuration
Assignee: United States Department of the Army
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Filing: 1977-04-14
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Granted: 1978-06-27
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Expires: 1997-04-14
Abstract
Abstract A thermal shunt is provided to recover the rejected heat from a radioisot thermoelectric generator utilized in a hybrid configuration with a chemical battery to maintain the chemical battery at a temperature above the environmental ambient temperature.
Inventors
- 👤 Guido Eddardo Guazzoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:23
CPC Classifications
H; H01; H01M; H01M16/00; G; G21; G21H; G21H1/00; G21H1/10; G21H1/103; H01M10/00; H01M10/60; H01M10/61; H01M10/615; H01M10/64; H01M10/647; H01M10/65; H01M10/655; H01M10/6554; H01M10/6555; H01M10/658; H01M10/66; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
An assembly including a holder and a plurality of electrical energy sources in said holder for supplying a load, said sources having different thermal characteristics comprising: a block of thermally conductive material having a first cavity accommodating a radioisotope thermal electric generator having a first thermal characteristic and a second cavity accommodating a chemical battery having a second thermal characteristic, said cavities being surrounded by said block, and a layer of thermal insulation disposed on and surrounding said block, said insulation layer trapping heat therein and said block directing heat between said different sources having said different thermal characteristics.
Claim 2
Dependent Claim
99 words
An assembly including a holder and a plurality of electrical energy sources in said holder for supplying a load, said sources having different thermal characteristics comprising: a block of thermally conductive material having a first cavity accommodating a radioisotope thermal electric generator having a first thermal characteristic and a second cavity accommodating a chemical battery having a second thermal characteristic, said cavities being surrounded by said block, and a layer of thermal insulation disposed on and surrounding said block, said insulation layer trapping heat therein and said block directing heat between said different sources having said different thermal characteristics.
Claim 3
Dependent Claim
21 words
The holder of claim 1 further including a thermally conductive liquid in said first and second cavities surrounding said sources therein.
Claim 4
Dependent Claim
14 words
The holder according to claim 2 wherein said thermally conductive liquid is silicone oil.
Claim 5
Dependent Claim
53 words
The holder according to claim 1 including a plurality of chemical batteries connected together and said second cavity comprises a plurality of openings in said block, each opening accommodating one of said plurality of chemical batteries, said plurality of openings being arranged radially about and disposed at equal distances from said first cavity.
Claim 6
Dependent Claim
22 words
The holder of claim 1 wherein said first and second sources are connected in parallel for supplying electrical energy to a load.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |