US3216904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel elements for nuclear reactors
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1961-06-26
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Granted: 1965-11-09
•
Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Challender Ronald Scott
- 👤 Saunders Alan Charles Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:17
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A NUCLEAR REACTOR FUEL ELEMENT COMPRISING A NUCLEAR FUEL MEMBER; A PROTECTIVE SHEATH SURROUNDING SAID NUCLEAR FUEL MEMBER; HELICAL HEAT TRANSFER FINS EXTENDING FROM THE OUTER SURFACE OF SAID PROTECTIVE SHEATH; AND FOUR LONGITUDINAL SPLITTER FINS SPACED SUBSTANTIALLY UNIFORMLY AROUND SAID SHEATH AND INTERSECTING SAID HELICAL HEAT TRANSFER FINS, SAID LONGITUDINAL SPLITTER FINDS BEING OF GREATER RADIAL DEPTH THAN THE HEAT TRANSFER FINS, ONE OF SAID SPLITTER FINS BEING OF UNIFORM DEPTH THROUGHOUT ITS LENGTH, AND THE OTHER THREE SPLITTER FINS HAVING PORTIONS OF REDUCED RADIAL DEPTH EXTENDING OVER THE GREATER PART OF THE LENGTH OF THE SAID THREE SPLITTER FINS AND HAVING PROJECTING PORTIONS OF THE SAME RADIAL DEPTH AS THE SAID ONE SPLITTER FIN OF UNIFORM DEPTH.
Claim 2
Dependent Claim
119 words
A NUCLEAR REACTOR FUEL ELEMENT COMPRISING A NUCLEAR FUEL MEMBER; A PROTECTIVE SHEATH SURROUNDING SAID NUCLEAR FUEL MEMBER; HELICAL HEAT TRANSFER FINS EXTENDING FROM THE OUTER SURFACE OF SAID PROTECTIVE SHEATH; AND FOUR LONGITUDINAL SPLITTER FINS SPACED SUBSTANTIALLY UNIFORMLY AROUND SAID SHEATH AND INTERSECTING SAID HELICAL HEAT TRANSFER FINS, SAID LONGITUDINAL SPLITTER FINDS BEING OF GREATER RADIAL DEPTH THAN THE HEAT TRANSFER FINS, ONE OF SAID SPLITTER FINS BEING OF UNIFORM DEPTH THROUGHOUT ITS LENGTH, AND THE OTHER THREE SPLITTER FINS HAVING PORTIONS OF REDUCED RADIAL DEPTH EXTENDING OVER THE GREATER PART OF THE LENGTH OF THE SAID THREE SPLITTER FINS AND HAVING PROJECTING PORTIONS OF THE SAME RADIAL DEPTH AS THE SAID ONE SPLITTER FIN OF UNIFORM DEPTH.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |