US3753856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core clamping system for a nuclear reactor
Assignee: Boeing North American Inc
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Filing: 1970-06-01
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Granted: 1973-08-21
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Expires: 1990-06-01
Abstract
Abstract A CORE CLAMPING SYSTEM FOR USE WITH NUCLEAR REACTORS WHEREIN BIMETALLIC ELELMENTS ARE PLACED AROUND A CORE SO THAT AT HIGH TEMPERATURE A FLUX CONDITIONS THEY ACT TO EXERT AN INWARDLY DIRECTED CLALMPING FORCE ON A PREDETERMINED CLAMPING PLANE THEREBY CONTERACTING THE TENDENCY FOR THE CORE TO EXPAND UNDER THOSE CONDITIONS AND MAINTAINING CONSTANT CORE GEOMETRY.
Inventors
- 👤 E Ash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:09
CPC Classifications
G; G21; G21C; G21C5/00; G21C5/02; G21C5/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |