Patent US3175955A successfully refreshed from Google Patents.
US3175955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gradient fuel plates
Assignee: Individual
•
Filing: 1961-01-11
•
Granted: 1965-03-30
•
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 12:08
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
Cited
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 |