US3177578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a fibrous fissionable member
Assignee: Lockheed Martin Corp
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Filing: 1961-03-28
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Granted: 1965-04-13
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Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Harold N Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:15
CPC Classifications
G; G21; G21C; G21C21/00; G21C21/02; G21C21/06; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/18; G21C3/26; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S264/00; Y10S264/19; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN THE METHOD FOR FABRICATING A NUDLEAR FUEL ELEMENT BY REDUCING THE CROSS-SECTIONAL AREA OF AN ASSEMBLY CONSTITUTED BY A CYLINDRICAL CORE ENDASED IN A METAL SHEATH, SAID CORE CONSISTING OF PARTICLES OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF URANIUM DIOXIDE, THORIUM OXIDE, PLUTONIUM OXIDE AND URANIUM OXIDE, SAID OXIDE PARTICLES ADMIXED WITH METAL FIBERS PRESENT IN AMOUNT EQUAL TO NOT LESS THAN ABOUT 5% BY VOLUME OF SAID CORE, SAID METAL FIBERS HAVING AN AVERAGE CROSS-SECTIONAL AREA NOT GREATER THAN ABOUT 7 SQUARE MILS AND A ENGTH OF BETWEEN ABOUT 1/8 INCH AND 1/4 INCH, SAID SHEATH AND SAID FIBERS BEING MADE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, IRON, TITANIUM, ZIRCONIUM, NICKEL AND MOLYBDENUM, THE IMPROVEMENT COMPRISNG THE STEPS OF ALIGNING SAID FIBERS GENERALLY NORMAL TO THE ONGITUDINAL AXIS OF SAID CORE, AND REDUCING THE CROSS-SECTIONAL AREA OF SAID ASSEMBLY BY COLD SWAGING SAME SO AS TO EFFECT A REDUCTION OF ABOUT 30% TO 40%.
Claim 2
Dependent Claim
162 words
IN THE METHOD FOR FABRICATING A NUDLEAR FUEL ELEMENT BY REDUCING THE CROSS-SECTIONAL AREA OF AN ASSEMBLY CONSTITUTED BY A CYLINDRICAL CORE ENDASED IN A METAL SHEATH, SAID CORE CONSISTING OF PARTICLES OF AN OXIDE SELECTED FROM THE GROUP CONSISTING OF URANIUM DIOXIDE, THORIUM OXIDE, PLUTONIUM OXIDE AND URANIUM OXIDE, SAID OXIDE PARTICLES ADMIXED WITH METAL FIBERS PRESENT IN AMOUNT EQUAL TO NOT LESS THAN ABOUT 5% BY VOLUME OF SAID CORE, SAID METAL FIBERS HAVING AN AVERAGE CROSS-SECTIONAL AREA NOT GREATER THAN ABOUT 7 SQUARE MILS AND A ENGTH OF BETWEEN ABOUT 1/8 INCH AND 1/4 INCH, SAID SHEATH AND SAID FIBERS BEING MADE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, IRON, TITANIUM, ZIRCONIUM, NICKEL AND MOLYBDENUM, THE IMPROVEMENT COMPRISNG THE STEPS OF ALIGNING SAID FIBERS GENERALLY NORMAL TO THE ONGITUDINAL AXIS OF SAID CORE, AND REDUCING THE CROSS-SECTIONAL AREA OF SAID ASSEMBLY BY COLD SWAGING SAME SO AS TO EFFECT A REDUCTION OF ABOUT 30% TO 40%.
References Cited (Backward Citations)
US2805473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |