US3220927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel elements for nuclear reactors
Assignee: Rolls Royce PLC
•
Filing: 1962-10-08
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Granted: 1965-11-30
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Bauer Stefan George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:06
CPC Classifications
G; G21; G21C; G21C21/00; G21C21/02; G21C21/12; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/20; G21C3/30; G21C3/36; 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
160 words
A FUEL ELEMENT ASSEMBLY FOR A NUCLEAR REACTOR COMPRISING INNER AND OUTER HOLLOW CONCENTRIC HOUSING MEMBERS DEFINING AN ELONGATED ANNULUS BETWEEN THEM; A PLURALITY OF FUEL ELEMENTS DISPOSED WITHIN THE ANNULUS IN SPACED RELATION FROM EACH OTHER AND FROM SAID HOUSING MEMBERS; EACH OF SAID FUEL ELEMENTS COMPRISING A WEDGESHAPED MASS OF FISSILE MATERIAL TAPERING TOWARD SAID INNER HOUSING MEMBER AND EXTENDING ALONG A SUBSTANTIAL PORTION OF SAID ANNULUS, SAID WEDGE-SHAPED MASS BEING ENCASED IN AND METALLICALLY BONDED TO THE INTERNAL WALL OF A SHEET METAL SHEATH, THE METALLIC BOND HAVING A LOW NEUTRON ABSORPTION AND A MELTING POINT ABOE THE TEMPERATURE TO WHICH THE FUEL ELEMENT WILL BE SUBJECTED IN OPERATION, THE SHEATH BEING SUBSTANTIALLY FREE FROM CHEMICAL ATTACK BY THE METALLIC BOND AT THE SAID TEMERATURE, THE SHEATH HAVING A PLURALITY OF PARTS WHICH ARE WELDED TOGETHER AND HAVING PROJECTIONS EXTENDING THEREFROM INTO ENGAGEMENT WITH SAID INNER AND OUTER HOUSING MEMBERS SO AS TO MAINTAIN SAID SPACED RELATIONSHIP.
Claim 2
Dependent Claim
160 words
A FUEL ELEMENT ASSEMBLY FOR A NUCLEAR REACTOR COMPRISING INNER AND OUTER HOLLOW CONCENTRIC HOUSING MEMBERS DEFINING AN ELONGATED ANNULUS BETWEEN THEM; A PLURALITY OF FUEL ELEMENTS DISPOSED WITHIN THE ANNULUS IN SPACED RELATION FROM EACH OTHER AND FROM SAID HOUSING MEMBERS; EACH OF SAID FUEL ELEMENTS COMPRISING A WEDGESHAPED MASS OF FISSILE MATERIAL TAPERING TOWARD SAID INNER HOUSING MEMBER AND EXTENDING ALONG A SUBSTANTIAL PORTION OF SAID ANNULUS, SAID WEDGE-SHAPED MASS BEING ENCASED IN AND METALLICALLY BONDED TO THE INTERNAL WALL OF A SHEET METAL SHEATH, THE METALLIC BOND HAVING A LOW NEUTRON ABSORPTION AND A MELTING POINT ABOE THE TEMPERATURE TO WHICH THE FUEL ELEMENT WILL BE SUBJECTED IN OPERATION, THE SHEATH BEING SUBSTANTIALLY FREE FROM CHEMICAL ATTACK BY THE METALLIC BOND AT THE SAID TEMERATURE, THE SHEATH HAVING A PLURALITY OF PARTS WHICH ARE WELDED TOGETHER AND HAVING PROJECTIONS EXTENDING THEREFROM INTO ENGAGEMENT WITH SAID INNER AND OUTER HOUSING MEMBERS SO AS TO MAINTAIN SAID SPACED RELATIONSHIP.
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |