US3813286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel element with failure indicator
Assignee: UNC NUCLEAR INDUSTRIES Inc A CORP OF
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Filing: 1972-05-08
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Granted: 1974-05-28
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Expires: 1992-05-08
Abstract
Abstract A novel fuel element for use in a power-generating nuclear reactor is described. The fuel element features a built-in indicator to indicate failure, and is especially adapted for use in a fuel assembly having a removable top closure. In a preferred embodiment, the indicator is a spring loaded movable pin which is displaced outwardly when the reactor is shut down by the internal element gas pressure. Should the element develop a leak, the spring causes retraction of the pin indicator. A failure sensor is also described.
Inventors
- 👤 A Goldman
- 👤 D Rowe
- 👤 C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:04
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0004; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3272; G21; G21C; G21C17/00; G21C17/06; G21C17/07; G21C17/10; G21C17/102; 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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |