Patent US1726634A successfully refreshed from Google Patents.
US3274069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel rods for nuclear reactors
Assignee: European Atomic Energy Community Euratom
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Filing: 1963-06-17
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Granted: 1966-09-20
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Alfille Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/20; G21C3/06; G21C3/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A FUEL ELEMENT FOR NUCLEAR REACTORS COOLED BY A HEAT-CARRYING PRESSURIZED FLUID, COMPRISING: A MECHANICALLY EXPANSIBLE AND CONTRACTIBLE ELASTIC STEEL SHEATH HAVING A THICKNESS SMALLER THAN 0.1 MM.; SAID SHEATH FORMED WITH MEANS TO ALLOW AXIAL AND RADICAL EXPANSION AND CONTRACTION THEREOF; NUCLEAR FUEL MATERIAL WITHIN SAID SHEATH AND SURROUNDED BY THE SAID SHEATH WITH A CLEARANCE GREATER THAN ONE TENTH OF ONE MILLIMETER; PLUGS CLOSING THE ENDS OF SAID SHEATH; A HEAT CONDUCTIVE FILLING MATERIAL HAVING A MINIMUM NEUTRON CROSS SECTION AND VISCOUS AT LEAST AT THE OPERATING TEMPERATUURES OF SAID REACTOR, SAID FILLING MATERIAL COMPLETELY FILLING ANY SPACE BETWEEN SAID SHEATH, PLUGS AND FUEL MATERIAL AND BALANCING BY HYDROSTATIC DEFORMATION THEREOF THE PRESSURE OF THE SAID HEAT CARRYING PRESSURIZED FLUID ACTING EXTERNALLY UPON SAID SHEATH FOR ANY MECHANICAL AND THERMAL STRESSES INDUCED BY THE SAID FUEL MATERIAL.
Claim 2
Dependent Claim
139 words
A FUEL ELEMENT FOR NUCLEAR REACTORS COOLED BY A HEAT-CARRYING PRESSURIZED FLUID, COMPRISING: A MECHANICALLY EXPANSIBLE AND CONTRACTIBLE ELASTIC STEEL SHEATH HAVING A THICKNESS SMALLER THAN 0.1 MM.; SAID SHEATH FORMED WITH MEANS TO ALLOW AXIAL AND RADICAL EXPANSION AND CONTRACTION THEREOF; NUCLEAR FUEL MATERIAL WITHIN SAID SHEATH AND SURROUNDED BY THE SAID SHEATH WITH A CLEARANCE GREATER THAN ONE TENTH OF ONE MILLIMETER; PLUGS CLOSING THE ENDS OF SAID SHEATH; A HEAT CONDUCTIVE FILLING MATERIAL HAVING A MINIMUM NEUTRON CROSS SECTION AND VISCOUS AT LEAST AT THE OPERATING TEMPERATUURES OF SAID REACTOR, SAID FILLING MATERIAL COMPLETELY FILLING ANY SPACE BETWEEN SAID SHEATH, PLUGS AND FUEL MATERIAL AND BALANCING BY HYDROSTATIC DEFORMATION THEREOF THE PRESSURE OF THE SAID HEAT CARRYING PRESSURIZED FLUID ACTING EXTERNALLY UPON SAID SHEATH FOR ANY MECHANICAL AND THERMAL STRESSES INDUCED BY THE SAID FUEL MATERIAL.
References Cited (Backward Citations)
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |