Patent US3018238A successfully refreshed from Google Patents.
US3018238A
Expired / Lapsed
US
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Method of forming a fuel element for a nuclear reactor
Assignee: Individual
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Filing: 1959-12-29
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Granted: 1962-01-23
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin H Layer
- 👤 Charles S Peet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/20; G21C21/00; G21C21/02; G21C21/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S228/00; Y10S228/903
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A METHOD OF FORMING A FUEL ELEMENT FOR A NUCLEAR REACTOR COMPRISING FORMING A PLURALITY OF SINTERED, COMPACT WAFERS OF URANIUM DIOXIDE, SANDBLASTING THE WAFERS TO ROUGHEN THE SURFACE THEREOF, EXPOSING THE WAFERS TO METHANE GAS AT 1025*C. FOR TWENTY MINUTES WHEREBY A COATING OF CRYSTALLINE CARBON 15 TO 40 MICROINCHES THICK IS FORMED THEREON, INSERTING THE WAFERS IN A RECEPTACLE PLATE OF AN ALLOY CONSISTING PREDOMINANTLY OF ZIRCONIUM, COVERING THE RECEPTACLE PLATE WITH CLADDING PLATES OF THE SAME ALLOY, FUSION WELDING THE EDGES OF THE CLADDING PLATES TO THE RECEPTACLE PLATE, ANDPRESSURE BONDING THE FUEL ELEMENT WITH HELIUM IN AN AUTOCLAVE AT A PRESSURE OF 10,000 P.S.I. FOR FOUR HOURS AT ABOUT 1500*F.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |