US3146172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moderator for nuclear reactors
Assignee: Rolls Royce PLC
•
Filing: 1960-06-15
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Granted: 1964-08-25
•
Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Bauer Stefan George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:56
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/14; G21C1/16; G21C1/18; G21C1/20; G21C15/00; G21C15/20; G21C5/00; G21C5/12; G21C7/00; G21C7/005; G21C7/26; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/904; Y10S376/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A NUCLEAR REACTOR COMPRISING A CORE, SPACED FUEL ELEMENTS EXTENDING WITHIN THE CORE, AND A MODERATOR MATERIAL OCCUPYING THE SPACES BETWEEN THE FUEL ELEMENTS, SAID MODERATOR MATERIAL COMPRISING MASSES INCORPORATING A METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND MAGNESIUM DISPOSED WITHIN SAID CORE AND OCCUPYING A FIRST PART OF THE SPACE BETWEEN AND AROUND THE FUEL ELEMENTS, AND LIGHT WATER OCCUPYING A SECOND PART OF THE SPACE BETWEEN AND AROUND THE FUEL ELEMENTS, SAID FUEL ELEMENTS HAVING A SPACING SUBSTANTIALLY GREATER THAN THE SLOWING DOWN LENGTH OF LIGHT WATER, AND THE RATIO OF THE PROPORTION OF THE MODERATOR SPACE OCCUPIED BY THE SELECTED METAL TO THE PROPORTION OF THE MODERATOR SPACE OCCUPIED BY THE LIGHT WATER GIVING A SLOWING DOWN LENGTH OF THE MODERATOR MATERIAL EQUIVALENT TO THE SPACING OF THE FUEL ELEMENTS.
Claim 2
Dependent Claim
135 words
A NUCLEAR REACTOR COMPRISING A CORE, SPACED FUEL ELEMENTS EXTENDING WITHIN THE CORE, AND A MODERATOR MATERIAL OCCUPYING THE SPACES BETWEEN THE FUEL ELEMENTS, SAID MODERATOR MATERIAL COMPRISING MASSES INCORPORATING A METAL SELECTED FROM THE GROUP CONSISTING OF LEAD AND MAGNESIUM DISPOSED WITHIN SAID CORE AND OCCUPYING A FIRST PART OF THE SPACE BETWEEN AND AROUND THE FUEL ELEMENTS, AND LIGHT WATER OCCUPYING A SECOND PART OF THE SPACE BETWEEN AND AROUND THE FUEL ELEMENTS, SAID FUEL ELEMENTS HAVING A SPACING SUBSTANTIALLY GREATER THAN THE SLOWING DOWN LENGTH OF LIGHT WATER, AND THE RATIO OF THE PROPORTION OF THE MODERATOR SPACE OCCUPIED BY THE SELECTED METAL TO THE PROPORTION OF THE MODERATOR SPACE OCCUPIED BY THE LIGHT WATER GIVING A SLOWING DOWN LENGTH OF THE MODERATOR MATERIAL EQUIVALENT TO THE SPACING OF THE FUEL ELEMENTS.
References Cited (Backward Citations)
US2810689A
Cited
US2825689A
Cited
US3093563A
Cited
US3071527A
Cited
US2929768A
Cited
US2999059A
Cited
US2977297A
Cited
US2982713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |