US3124516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactor duct closure device
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-05-02
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Granted: 1964-03-10
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Leon Le Flem
- 👤 Daniel Voeltzel
- 👤 Jacques Jouin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:00
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/06; G21C13/067; G21C19/00; G21C19/20; G21C19/22; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
IN A NUCLEAR REACTOR DUCT CLOSURE DEVICE FOR AT LEAST ONE DUCT OF A NUCLEAR REACTOR HAVING A RADIOLOGICAL SHIELD, A SHEATH PASSING THROUGH THE RADIOLOGICAL SHIELD ECCENTRIC WITH RESPECT TO THE DUCT, A FIRST OUTER DRUM MOUNTED IN SAID SHEATH IN THE LONGITUDINAL AXIS THEREOF, A SECOND INTERIOR DRUM MOUNTED BENEATH SAID FIRST DRUM IN SAID SHEATH, THE LONGITUDINAL AXES OF SAID DRUMS BEING COAXIAL WITH THE LONGITUDINAL AXIS OF SAID SHEATH, AT LEAST ONE CANAL PASSING LONGITUDINALLY THROUGH EACH OF SAID DRUMS AND PARALLEL AND ECCENTRIC WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID DRUM, MEANS FOR ROTATING SAID FIRST DRUM ANGULARLY WITH RESPECT TO SAID SHEATH FROM A FIRST ANGULAR POSITION TO A SECOND ANGULAR POSITION IN WHICH SAID CANAL OF SAID FIRST DRUM FORMS A PROLONGATION OF THE DUCT OF THE REACTOR, SECOND MEANS FOR ROTATING SAID SECOND DRUM ANGULARLY WITH RESPECT TO SAID SHEATH FROM A FIRST ANGULAR POSITION TO A SECOND ANGULAR POSITION IN WHICH SAID CANAL OF SAID SECOND DRUM FORMS A PROLONGATION OF THE DUCT OF THE REACTOR AND OF SAID CANAL OF SAID FIRST DRUM AND MEANS FOR LIMITING THE ANGULAR ROTATION OF SAID SECOND DRUM, SAID DRUMS PROVIDING IN THEIR INITIAL ANGULAR POSITIONS A CLOSURE FOR THE DUCT OF THE REACTOR AND RADIOLOGICAL PROTECTION FOR THE REACTOR TOWARD ITS SURFACE.
Claim 2
Dependent Claim
220 words
IN A NUCLEAR REACTOR DUCT CLOSURE DEVICE FOR AT LEAST ONE DUCT OF A NUCLEAR REACTOR HAVING A RADIOLOGICAL SHIELD, A SHEATH PASSING THROUGH THE RADIOLOGICAL SHIELD ECCENTRIC WITH RESPECT TO THE DUCT, A FIRST OUTER DRUM MOUNTED IN SAID SHEATH IN THE LONGITUDINAL AXIS THEREOF, A SECOND INTERIOR DRUM MOUNTED BENEATH SAID FIRST DRUM IN SAID SHEATH, THE LONGITUDINAL AXES OF SAID DRUMS BEING COAXIAL WITH THE LONGITUDINAL AXIS OF SAID SHEATH, AT LEAST ONE CANAL PASSING LONGITUDINALLY THROUGH EACH OF SAID DRUMS AND PARALLEL AND ECCENTRIC WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID DRUM, MEANS FOR ROTATING SAID FIRST DRUM ANGULARLY WITH RESPECT TO SAID SHEATH FROM A FIRST ANGULAR POSITION TO A SECOND ANGULAR POSITION IN WHICH SAID CANAL OF SAID FIRST DRUM FORMS A PROLONGATION OF THE DUCT OF THE REACTOR, SECOND MEANS FOR ROTATING SAID SECOND DRUM ANGULARLY WITH RESPECT TO SAID SHEATH FROM A FIRST ANGULAR POSITION TO A SECOND ANGULAR POSITION IN WHICH SAID CANAL OF SAID SECOND DRUM FORMS A PROLONGATION OF THE DUCT OF THE REACTOR AND OF SAID CANAL OF SAID FIRST DRUM AND MEANS FOR LIMITING THE ANGULAR ROTATION OF SAID SECOND DRUM, SAID DRUMS PROVIDING IN THEIR INITIAL ANGULAR POSITIONS A CLOSURE FOR THE DUCT OF THE REACTOR AND RADIOLOGICAL PROTECTION FOR THE REACTOR TOWARD ITS SURFACE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |