US2852457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactors
Assignee: Individual
•
Filing: 1955-06-30
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Granted: 1958-09-16
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Long Everett
- 👤 Ashley James Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:59
CPC Classifications
G; G21; G21C; G21C5/00; G21C5/02; G21C5/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A STRUCTURE FOR SLOWING NEUTRONS TO THERMAL ENERGY COMPRISING A PLURALITY OF GRAPHITE BLOCKS OF SQUARE CROSS SECTION ARRANGED WITH THEIR AXES LYING IN TWO SETS OF PARALLEL EQUIDISTANT PLANES, THE PLANES OF ONE SET BEING AT RIGHT ANGLES TO THE PLANES OF THE OTHER SET, THE AXIS OF EACH BLOCK LYING IN A PLANE OF EACH SET, TWO OPPOSED SURFACES OF EACH BLOCK BEING SLIGHTLY OUT OF PARALLEL WITH THE PLANES OF THE SAID ONE SET AND BEING PARALLEL WITH THE CORRESPONDING OPPOSED SURFACES OF EACH REMAINING BLOCK, THE REMAINING TWO OPPOSED SURFACES OF EACH BLOCK BEING SLIGHTLY OUT OF PARALLEL WITH THE PLANES OF THE SAID OTHER SET AND PARALLEL WITH THE CORRESPONDING REMAINNG OPPOSED SURFACES F EACH REMAINING BLOCK, SAID BLOCKS BEING LOCATED CLOSE ENOUGH TOGETHER THAT NEUTRONS TRAVELLING IN A DIRECTION NORMAL TO THE AXES OF THE BLOCKS CAN TRAVEL NO GREATER DISTANCE THAN THE WIDTH OF ONE BLOCK PLUS THE DISTANCE BETWEEN BLOCKS BEFORE THEY STRIKE A GRAPHITE BLOCK, WHEREBY EACH INTERIOR BLOCK IS DIRECTLY SURROUNDED BY FOUR BLOCKS EACH HAVING A SURFACE ADJACENT AND PARALLEL TO ONE SURFACE OF SAID INTERIOR BLOCK AND EXTENDING LATERALLY BEYOND SAID ONE SURFACE.
Claim 2
Dependent Claim
195 words
A STRUCTURE FOR SLOWING NEUTRONS TO THERMAL ENERGY COMPRISING A PLURALITY OF GRAPHITE BLOCKS OF SQUARE CROSS SECTION ARRANGED WITH THEIR AXES LYING IN TWO SETS OF PARALLEL EQUIDISTANT PLANES, THE PLANES OF ONE SET BEING AT RIGHT ANGLES TO THE PLANES OF THE OTHER SET, THE AXIS OF EACH BLOCK LYING IN A PLANE OF EACH SET, TWO OPPOSED SURFACES OF EACH BLOCK BEING SLIGHTLY OUT OF PARALLEL WITH THE PLANES OF THE SAID ONE SET AND BEING PARALLEL WITH THE CORRESPONDING OPPOSED SURFACES OF EACH REMAINING BLOCK, THE REMAINING TWO OPPOSED SURFACES OF EACH BLOCK BEING SLIGHTLY OUT OF PARALLEL WITH THE PLANES OF THE SAID OTHER SET AND PARALLEL WITH THE CORRESPONDING REMAINNG OPPOSED SURFACES F EACH REMAINING BLOCK, SAID BLOCKS BEING LOCATED CLOSE ENOUGH TOGETHER THAT NEUTRONS TRAVELLING IN A DIRECTION NORMAL TO THE AXES OF THE BLOCKS CAN TRAVEL NO GREATER DISTANCE THAN THE WIDTH OF ONE BLOCK PLUS THE DISTANCE BETWEEN BLOCKS BEFORE THEY STRIKE A GRAPHITE BLOCK, WHEREBY EACH INTERIOR BLOCK IS DIRECTLY SURROUNDED BY FOUR BLOCKS EACH HAVING A SURFACE ADJACENT AND PARALLEL TO ONE SURFACE OF SAID INTERIOR BLOCK AND EXTENDING LATERALLY BEYOND SAID ONE SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |