Patent US3202583A successfully refreshed from Google Patents.
US3202583A
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Method of maintaining sheathing contact in hollow fuel elements during nuclear reactor operation
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-05-03
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Granted: 1965-08-24
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Expires: 1980-05-03
Abstract
No abstract record available.
Inventors
- 👤 Salesse Marc
- 👤 Stohr Jacques Andre
- 👤 Gauthron Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:20
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A METHOD FOR MAINTAINING CONTACT BETWEEN INNER SHEATHS AND HOLLOW CYLINDRICAL FUEL PORTIONS IN A NUCLEAR REACTOR COOLED BY A HEAT EXCHANGE FLUID IN WHICH AN OUTER SHEET IS FORMED ABOUT AND IN CONTACT WITH THE EXTERNAL SURFACE OF A HOLLOW FUEL PORITON AND AN INNER SHEET IS IN ENGAGEMENT WITH THE INNER SURFACE OF THE FUEL PORITON UNTIL THERMAL EXPANSION OF THE FUEL PORTION SEPARATES THE FUEL PORTION FROM THE INNER SHEET, THE STEPS OF PRE-HEATING THE HEAT EXCHANGE FLUID BY FIRST CONTACT WITH THE FUEL PORTIONS AND THEN FORCING THE INNER SHEET INTO ENGAGEMENT WITH THE INNER SURFACE OF THE FUEL PORTION AFTER THERMAL EXPANSION OF THE FUEL PORTION BY HEAT AND PRESSURE APPLIED THERETO BY RECIRCULATION OF THE HEATED HEAT EXCHANGE FLUID.
Claim 2
Dependent Claim
126 words
IN A METHOD FOR MAINTAINING CONTACT BETWEEN INNER SHEATHS AND HOLLOW CYLINDRICAL FUEL PORTIONS IN A NUCLEAR REACTOR COOLED BY A HEAT EXCHANGE FLUID IN WHICH AN OUTER SHEET IS FORMED ABOUT AND IN CONTACT WITH THE EXTERNAL SURFACE OF A HOLLOW FUEL PORITON AND AN INNER SHEET IS IN ENGAGEMENT WITH THE INNER SURFACE OF THE FUEL PORITON UNTIL THERMAL EXPANSION OF THE FUEL PORTION SEPARATES THE FUEL PORTION FROM THE INNER SHEET, THE STEPS OF PRE-HEATING THE HEAT EXCHANGE FLUID BY FIRST CONTACT WITH THE FUEL PORTIONS AND THEN FORCING THE INNER SHEET INTO ENGAGEMENT WITH THE INNER SURFACE OF THE FUEL PORTION AFTER THERMAL EXPANSION OF THE FUEL PORTION BY HEAT AND PRESSURE APPLIED THERETO BY RECIRCULATION OF THE HEATED HEAT EXCHANGE FLUID.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |