US3824153A
Expired / Lapsed
US
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Nuclear reactor fuel assembly spacer grid
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1972-06-26
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Granted: 1974-07-16
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Expires: 1992-06-26
Abstract
Abstract A spacer grid in a fuel element assembly including a plurality of elongate fuel pins supported in a bundle with their longitudinal axes parallel comprises a rigid grid structure of intersecting cross members defining cells each of which is penetrated by a fuel pin of the assembly and resilient strip members slotted through the grid structure parallel to the cross members, the resilient strip members providing transverse support for the fuel pins in the cells of the grid structure and stop means being formed projecting from the cross members inside the cells and underlying the strip members in the cells.
Inventors
- 👤 B Leaver
- 👤 T Seddon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:00
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/30; G21C3/32; G21C3/34; G21C3/352; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |