US3347711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-isotope thermoelectric apparatus and fuel form
Assignee: Individual
•
Filing: 1963-07-25
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Granted: 1967-10-17
•
Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Hampden O Banks
- 👤 Eugene T Teatum
- 👤 Ian R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
H; H10; H10N; H10N10/00; G; G21; G21H; G21H1/00; G21H1/10; G21H1/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A THERMOELECTRIC GENERATOR COMPRISING: (A) A DENSE INSOLUBLE SOLID FUEL FORM MATERIAL INCLUDING AN ENERGETIC GAMMA EMITTING RADIOISOTOPE SELECTED FROM THE GROUP CONSISTING OF STRONTIUM-90, CESIUM-137 AND CERIUM-144; (B) A METALLIC CLADDING DISPOSED IN HEAT CONDUCTIVE RELATION TO ENCLOSE SAID FUEL FORM MATERIAL; (C) A GENERALLY CYLINDRICAL RADIATION SHIELD HAVING A PLANAR END FACE AND DEFINING A CAVITY, THE WALLS OF WHICH ARE IN CLOSE-FITTING HEAT CONDUCTIVE RELATION TO SAID CLADDING OF SAID FUEL FORM SAID SHIELD CONSTRUCTED OF A HEAVY METAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN AND DEPLETED URANIUM SO AS TO ABSORB AND CONVERT THE ENERGETIC RADIATION EMITTED BY SAID RADIOISOTOPE INTO HEAT THEREIN; SAID SHIELD HAVING A POLISHED REFLECTIVE METAL SURFACE PLATING TO MINIMIZE RADIATIVE HEAT LOSS THEREFROM; (D) A RADIANT HEAT SHIELD INCLUDING AT LEAST TWO COEXTENSIVE POLISHED THIN WALL HEAT REFLECTIVE METALLIC MEMBERS SUPPORTED IN INSULATED SPACED CONCENTRIC
Claim 2
Dependent Claim
145 words
A THERMOELECTRIC GENERATOR COMPRISING: (A) A DENSE INSOLUBLE SOLID FUEL FORM MATERIAL INCLUDING AN ENERGETIC GAMMA EMITTING RADIOISOTOPE SELECTED FROM THE GROUP CONSISTING OF STRONTIUM-90, CESIUM-137 AND CERIUM-144; (B) A METALLIC CLADDING DISPOSED IN HEAT CONDUCTIVE RELATION TO ENCLOSE SAID FUEL FORM MATERIAL; (C) A GENERALLY CYLINDRICAL RADIATION SHIELD HAVING A PLANAR END FACE AND DEFINING A CAVITY, THE WALLS OF WHICH ARE IN CLOSE-FITTING HEAT CONDUCTIVE RELATION TO SAID CLADDING OF SAID FUEL FORM SAID SHIELD CONSTRUCTED OF A HEAVY METAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN AND DEPLETED URANIUM SO AS TO ABSORB AND CONVERT THE ENERGETIC RADIATION EMITTED BY SAID RADIOISOTOPE INTO HEAT THEREIN; SAID SHIELD HAVING A POLISHED REFLECTIVE METAL SURFACE PLATING TO MINIMIZE RADIATIVE HEAT LOSS THEREFROM; (D) A RADIANT HEAT SHIELD INCLUDING AT LEAST TWO COEXTENSIVE POLISHED THIN WALL HEAT REFLECTIVE METALLIC MEMBERS SUPPORTED IN INSULATED SPACED CONCENTRIC
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |