Patent US3140983A successfully refreshed from Google Patents.
US3140983A
Expired / Lapsed
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Nuclear reactor fuel elements
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1961-07-11
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Granted: 1964-07-14
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Expires: 1981-07-11
Abstract
No abstract record available.
Inventors
- 👤 Waine Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:24
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901; Y10S376/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A FUEL ELEMENTS COMPRISING A TUBULAR SHEATH, A CLOSEPACKED COLUMN OF SOLID CYLINDRICAL PELLETS IN END CONTACT WITH EACH OTHER WITHIN THE SHEATH, CLOSURE MEMBERS CLOSING-OFF THE ENDS OF THE SHEATH AND IN CONTACT WITH THE END PELLETS OF THE COLUMN, A NUMBER OF SAID PELLETS BEING A NUCLEAR FUEL, THE ENDS OF THE PELLETS OF NUCLEAR FUEL HAVING CENTRAL DEPRESSION THEREIN WITH FLAT RIMS BOUNDING SAID DEPRESSION.
Claim 2
Dependent Claim
68 words
A FUEL ELEMENTS COMPRISING A TUBULAR SHEATH, A CLOSEPACKED COLUMN OF SOLID CYLINDRICAL PELLETS IN END CONTACT WITH EACH OTHER WITHIN THE SHEATH, CLOSURE MEMBERS CLOSING-OFF THE ENDS OF THE SHEATH AND IN CONTACT WITH THE END PELLETS OF THE COLUMN, A NUMBER OF SAID PELLETS BEING A NUCLEAR FUEL, THE ENDS OF THE PELLETS OF NUCLEAR FUEL HAVING CENTRAL DEPRESSION THEREIN WITH FLAT RIMS BOUNDING SAID DEPRESSION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |