US3741867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control rod drive system
Assignee: Gulf Oil Corp
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Filing: 1971-06-15
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Granted: 1973-06-26
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Expires: 1991-06-15
Abstract
Abstract A CONTROL ROD DRIVE SYSTEM FOR A NUCLEAR REACTOR IS DESCRIBED IN WHICH A FLYWHEEL IS USED TO ABSORB KINETIC ENERGY OF THE CONTROL ROD AND ASSOCIATED ELEMENTS NEAR THE END OF A SCRAM STROKE. IN THIS MANNER, BRAKING OF THE CONTROL ROD IS ACCOMPLISHED WITHOUT PRODUCING UNDUE STRESS THEREIN AND IN THE ASSOCIATED ELEMENTS.
Inventors
- 👤 P Fortescue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:46
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/20; G21C7/12; G21C7/14; 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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |