US3175955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gradient fuel plates
Assignee: Individual
•
Filing: 1961-01-11
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Granted: 1965-03-30
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Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 Richard D Cheverton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:37
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/02; G21C7/04; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/18; G21C3/30; G21C3/36; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A NEUTRONIC REACTOR FUEL ELEMENT PLATE HAVING A CENTRAL FISSIONABLE FUEL-BEARING CORE SURROUNDED BY A PROTECTIVE CLADDING, THE IMPROVEMENT WHICH COMPRISES A COMPOSITE CORE OF UNIFORM THICKNESS, SAID COMPOSITE CORE BEING DIVIDED INTO A PRIMARY CORE WHICH VARIES IN THICKNESS ACROSS ITS WIDTH, SAID PRIMARY CORE CONTAINING A FISSIONABLE FUEL OF UNIFORM COMPOSITION AND A BURNABLE NEUTRON POISON; AND A SECONDARY CORE CONSISTING ESSENTIALLY OF A BURNABLE NEUTRON POISON DISPERSED IN A CARRIER MATERIAL COVERING AT LEAST ONE OF THE MAJOR SURFACES OF SAID PRIMARY CORE.
Claim 2
Dependent Claim
87 words
IN A NEUTRONIC REACTOR FUEL ELEMENT PLATE HAVING A CENTRAL FISSIONABLE FUEL-BEARING CORE SURROUNDED BY A PROTECTIVE CLADDING, THE IMPROVEMENT WHICH COMPRISES A COMPOSITE CORE OF UNIFORM THICKNESS, SAID COMPOSITE CORE BEING DIVIDED INTO A PRIMARY CORE WHICH VARIES IN THICKNESS ACROSS ITS WIDTH, SAID PRIMARY CORE CONTAINING A FISSIONABLE FUEL OF UNIFORM COMPOSITION AND A BURNABLE NEUTRON POISON; AND A SECONDARY CORE CONSISTING ESSENTIALLY OF A BURNABLE NEUTRON POISON DISPERSED IN A CARRIER MATERIAL COVERING AT LEAST ONE OF THE MAJOR SURFACES OF SAID PRIMARY CORE.
References Cited (Backward Citations)
US2998367A
Cited
US2967812A
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FR1241339A
Cited
US3049486A
Cited
FR1249178A
Cited
US2984613A
Cited
US3122484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |