Patent US3687804A successfully refreshed from Google Patents.
US3687804A
Expired / Lapsed
US
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Compact and safe nuclear reactor
Assignee: United States Atomic Energy Commission
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Filing: 1971-10-27
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Granted: 1972-08-29
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Expires: 1991-10-27
Abstract
Abstract A COMPACT, LIGHTWEIGHT AND LOW COST NUCLEAR POWER REACTOR THAT IS SAFE TO BUILD AND OPERATE. THE REACTOR CORE CONTAINS THE ABSOLUTE MINIMUM CRITICAL MASS FOR THE NUCLEAR FUEL USED AND ANY CHANGE IN MATERIALS OR GEOMETRY WILL REDUCE THE REACTIVITY OF THE ASSEMBLY. A BERYLLIUM REFLECTOR SURROUNDS THE CORE AND A LIQUID MODERATOR-COOLANT CIRCULATES THROUGH AND AROUND IT. THE DEVICE IS ENCLOSED IN A PRESSURE SHELL AND CONTROL IS ACCOMPLISHED BY STATE OF THE ART MEANS. THE CORE CAN BE CHEMICALLY PROCESSED AND FABRICATED IN ONE LOT AND THE REACTOR WILL NOT BECOME CRITICAL UNTIL THE CORE IS SURROUNDED BY THE BERYLLIUM REFLECTOR AND FILLED WITH THE LIQUID MODERATORCOOLANT.
Inventors
- 👤 Carroll B Mills
- 👤 Robert I Brasier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:12
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/14; G21C1/00; G21C1/04; G21C1/06; G21C1/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |