US3736227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactor fuel element spacer assembly lock
Assignee: Consolidation Coal Co
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Filing: 1970-06-01
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Granted: 1973-05-29
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Expires: 1990-06-01
Abstract
Abstract a nuclear reactor fuel element spacer arrangement has a fuel element supporting and spacing means through which respective fuel rods extend and which permits axial movement of the individual fuel rods while restraining them against lateral movement. In order to restrict axial movement of the spacer with respect to the entire assembly of rods, the fuel rod spacer is fastened to one of the fuel rods by a spring-loaded snap-in locking device. This prevents the fuel rod spacer distance along the fuel rods from being shifted as, for example, from fuel rod vibration or coolant drag force on the spacer or as a result of channel placement during installation.
Inventors
- 👤 S Nakazato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:48
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/30; G21C3/32; G21C3/33; G21C3/332; 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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |