US3726761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactor core clamping system
Assignee: Boeing North American Inc
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Filing: 1970-05-14
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Granted: 1973-04-10
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Expires: 1990-05-14
Abstract
Abstract A clamping device for nuclear reactor cores wherein the force of gravity, acting upon weights and through a mechanical linkage, is made to exert a radial inwardly directed force of constant magnitude on the reactor core. Cams of mechanical supporting members are used to hold the weight in a upward position when a clamping force is not desired as for example during refueling.
Inventors
- 👤 J Thorel
- 👤 W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:52
CPC Classifications
G; G21; G21C; G21C5/00; G21C5/02; G21C5/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1006; Y10T292/1007; Y10T292/1008
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |