Patent US3197379A successfully refreshed from Google Patents.
US3197379A
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US
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Guide tubes for nuclear reactors
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1962-05-01
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Granted: 1965-07-27
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Alfille Lucien
- 👤 Ropers Jean
- 👤 Gewiss Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:34
CPC Classifications
G; G21; G21C; G21C15/00; G21C15/20; G21C1/00; G21C1/04; G21C1/06; G21C1/14; G21C1/16; G21C1/18; G21C1/20; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A FLUID COOLED LIQUID MODERATED NUCLEAR REACTOR, AT LEAST ONE HORIZONTAL PRESSURE TUBE PASSING THROUGH THE REACTOR AND A COMPOSITE GUIDE TUBE FOR A FUEL ELEMENT HOUSED IN SAID PRESSURE TUBE COMPRISING AN INNER METALLIC TUBULAR ELEMENT FOR GUIDING THE FUEL ELEMENT, AT LEAST ONE METALLIC STRUCTURE HAVING A LOW APPARENT DENSITY SURROUNDING SAID TUBULAR ELEMENT, THE INNER SURFACE OF SAID STRUCTURE CONTACTING SAID TUBULAR ELEMENT AND THE OUTER SURFACE OF STRUCTURE CONTACTING THE INNER SURFACE OF SAID PRESSURE TUBE, MEANS FOR HOLDING SAID STRUCTURE ON SAID TUBULAR ELEMENT AND STOP MEANS SECURED TO SAID TUBULAR ELEMENT AND TO SAID PRESSURE TUBE FOR MAINTAINING SAID TUBULAR ELEMENT IN POSITION IN THE PRESSURE TUBE, SAID METALLIC STRUCTURE COMPRISING HELICALLY WOUND STRIPS FORM-
Claim 2
Dependent Claim
122 words
IN A FLUID COOLED LIQUID MODERATED NUCLEAR REACTOR, AT LEAST ONE HORIZONTAL PRESSURE TUBE PASSING THROUGH THE REACTOR AND A COMPOSITE GUIDE TUBE FOR A FUEL ELEMENT HOUSED IN SAID PRESSURE TUBE COMPRISING AN INNER METALLIC TUBULAR ELEMENT FOR GUIDING THE FUEL ELEMENT, AT LEAST ONE METALLIC STRUCTURE HAVING A LOW APPARENT DENSITY SURROUNDING SAID TUBULAR ELEMENT, THE INNER SURFACE OF SAID STRUCTURE CONTACTING SAID TUBULAR ELEMENT AND THE OUTER SURFACE OF STRUCTURE CONTACTING THE INNER SURFACE OF SAID PRESSURE TUBE, MEANS FOR HOLDING SAID STRUCTURE ON SAID TUBULAR ELEMENT AND STOP MEANS SECURED TO SAID TUBULAR ELEMENT AND TO SAID PRESSURE TUBE FOR MAINTAINING SAID TUBULAR ELEMENT IN POSITION IN THE PRESSURE TUBE, SAID METALLIC STRUCTURE COMPRISING HELICALLY WOUND STRIPS FORM-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |