Patent US3111475A successfully refreshed from Google Patents.
US3111475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel element for a nuclear reactor
Assignee: Individual
•
Filing: 1959-03-27
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Granted: 1963-11-19
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Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
- 👤 John K Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C15/00; G21C15/02; G21C15/04; G21C3/06; G21C3/30; G21C3/32; G21C3/38; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A FUEL ELEMENT FOR HIGH TEMPERATURE GAS COOLED NUCLEAR REACTORS COMPRISING AN ELONGATED NUCLEAR FUEL SLUG, A GRAPHITE SLEEVE ENCASING SAID SLUG LONGITUDINALLY AND HAVING A GOOD MECHANICAL FIT AT THE TEMPERATURES OF OPERATION OF SAID REACTOR, SAID SLEEVE BEING LONGER THAN SAID SLUG, GRAPHITE END CUPS RECESSED WITHIN AND SEALED TO EACH END OF SAID SLEEVE IN SPACED RELATIONSHIP TO SAID FUEL SLUG, SAID SPACE BEING AT LEAST ENOUGH TO PERMIT FULL LONGITUDINAL EXPANSION OF SAID SLUG WITH SUBSTANTIALLY NO RADIAL EXPANSION WHEN SAID FUEL ELEMENT IS RAISED TO THE TEMPERATURE OF OPERATION OF SAID REACTOR, A CONCENTRIC GRAPHITE CYLINDER IN SPACED RELATION WITH SAID SLEEVE AND A PLURALITY OF LONGITUDINAL GRAPHITE FINS INTEGRALLY JOINING SAID SLEEVE AND SAID CONCENTRIC CYLINDER ALONG THE ENTIRE LENGTH THEREOF.
Claim 2
Dependent Claim
127 words
A FUEL ELEMENT FOR HIGH TEMPERATURE GAS COOLED NUCLEAR REACTORS COMPRISING AN ELONGATED NUCLEAR FUEL SLUG, A GRAPHITE SLEEVE ENCASING SAID SLUG LONGITUDINALLY AND HAVING A GOOD MECHANICAL FIT AT THE TEMPERATURES OF OPERATION OF SAID REACTOR, SAID SLEEVE BEING LONGER THAN SAID SLUG, GRAPHITE END CUPS RECESSED WITHIN AND SEALED TO EACH END OF SAID SLEEVE IN SPACED RELATIONSHIP TO SAID FUEL SLUG, SAID SPACE BEING AT LEAST ENOUGH TO PERMIT FULL LONGITUDINAL EXPANSION OF SAID SLUG WITH SUBSTANTIALLY NO RADIAL EXPANSION WHEN SAID FUEL ELEMENT IS RAISED TO THE TEMPERATURE OF OPERATION OF SAID REACTOR, A CONCENTRIC GRAPHITE CYLINDER IN SPACED RELATION WITH SAID SLEEVE AND A PLURALITY OF LONGITUDINAL GRAPHITE FINS INTEGRALLY JOINING SAID SLEEVE AND SAID CONCENTRIC CYLINDER ALONG THE ENTIRE LENGTH THEREOF.
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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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |