US3227624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control rod for nuclear reactors
Assignee: Groupement Atomique Alsacienne Atlantique SA
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Filing: 1963-11-12
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Granted: 1966-01-04
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Lechevallier Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/18; G21C7/10; G21C7/20; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A CONTROL ROD FOR NUCLEAR REACTORS, COMPRISING: A PLURALITY OF TELESCOPICALLY ASSEMBLED ANNULAR ELEMENTS; A MEMBER FOR CONTROLLING THE SLIDING MOVEMENT OF SAID ELEMENTS RELATIVE TO EACH OTHER AND FOR SUSPENDING THE COMBINED ASSEMBLY OF SAID ELEMENTS FOR VERTICAL MOVEMENT BETWEEN AN INOPERATIVE POSITION WHEREIN SAID ASSEMBLY IS COMPLETELY WITHDRAWN FROM THE CORE CHANNEL OF A NUCLEAR REACTOR AND AN OPERATIVE POSITION WHEREIN SAID ASSEMBLY IS POSITIONED IN THE INTERIOR OF THE REACTOR CORE; AND MEANS SECURING THE SUSPENSION MEMBER TO ONE OF THE ELEMENTS FORMING THE END ELEMENT OF SAID ASSEMBLY, EACH OF SAID ANNULAR ELEMENTS INCLUDING A FIRST CYLINDRICAL PORTION HAVING A DIAMETER SMALLER THAN A FREELY SLIDABLE IN SAID CORE CHANNEL AND A SECOND CYLINDRICAL PORTION HAVING A DIAMETER WHICH TELESCOPICALLY FITS INSIDE THE FIRST CYLINDRICAL PORTION OF THE ADJACENT ELEMENT; THE RESPECTIVE DIAMETERS OF SAID FIRST AND SAID SECOND PORTION OF EACH OF SAID ASSEMBLED ELEMENTS BEING SUBSTANTIALLY UNIFORM; AN OUTWARDLY FORMED FLANGE ON THE OUTER END OF EACH OF SAID SECOND CYLINDRICAL PORTIONS HAVING AN OUTER DIAMETER SLIGHTLY SMALLER THAN AND FREELY SLIDABLE WITHIN THE INNER WALL OF THE RESPECTIVE FIRST CYLINDRICAL PORTION; AND AN INWARDLY FORMED SHOULDER ON THE OUTER
Claim 2
Dependent Claim
196 words
A CONTROL ROD FOR NUCLEAR REACTORS, COMPRISING: A PLURALITY OF TELESCOPICALLY ASSEMBLED ANNULAR ELEMENTS; A MEMBER FOR CONTROLLING THE SLIDING MOVEMENT OF SAID ELEMENTS RELATIVE TO EACH OTHER AND FOR SUSPENDING THE COMBINED ASSEMBLY OF SAID ELEMENTS FOR VERTICAL MOVEMENT BETWEEN AN INOPERATIVE POSITION WHEREIN SAID ASSEMBLY IS COMPLETELY WITHDRAWN FROM THE CORE CHANNEL OF A NUCLEAR REACTOR AND AN OPERATIVE POSITION WHEREIN SAID ASSEMBLY IS POSITIONED IN THE INTERIOR OF THE REACTOR CORE; AND MEANS SECURING THE SUSPENSION MEMBER TO ONE OF THE ELEMENTS FORMING THE END ELEMENT OF SAID ASSEMBLY, EACH OF SAID ANNULAR ELEMENTS INCLUDING A FIRST CYLINDRICAL PORTION HAVING A DIAMETER SMALLER THAN A FREELY SLIDABLE IN SAID CORE CHANNEL AND A SECOND CYLINDRICAL PORTION HAVING A DIAMETER WHICH TELESCOPICALLY FITS INSIDE THE FIRST CYLINDRICAL PORTION OF THE ADJACENT ELEMENT; THE RESPECTIVE DIAMETERS OF SAID FIRST AND SAID SECOND PORTION OF EACH OF SAID ASSEMBLED ELEMENTS BEING SUBSTANTIALLY UNIFORM; AN OUTWARDLY FORMED FLANGE ON THE OUTER END OF EACH OF SAID SECOND CYLINDRICAL PORTIONS HAVING AN OUTER DIAMETER SLIGHTLY SMALLER THAN AND FREELY SLIDABLE WITHIN THE INNER WALL OF THE RESPECTIVE FIRST CYLINDRICAL PORTION; AND AN INWARDLY FORMED SHOULDER ON THE OUTER
References Cited (Backward Citations)
US2852458A
Cited
US2987455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |