US3260652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular heat exchange element
Assignee: CA Parsons and Co Ltd
•
Filing: 1956-10-25
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Granted: 1966-07-12
•
Expires: 1976-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ritz Heinrich Hugo Ludolf
- 👤 Elliott Edward Rae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:08
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/08; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/14; F28F1/34; F28F1/36; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A FUEL ELEMENT FOR A NUCLEAR REACTOR, SAID ELEMENT BEING ADAPTED FOR INSERTION IN A BORE IN A CORE OF THE REACTOR THROUGH WHICH BORE A COOLING FLUID IS CIRCULATED WHICH ELEMENT COMPRISES A TUBULAR CONTAINER FOR HOUSING NUCLEAR FUEL, SAID CONTAINER HAVING HELICAL FINS FORMED ON ITS OUTER SURFACE, SAID FINS FORMING FLOW CHANNELS WHICH ARE INTERRUPTED BY LONGITUDINALLY EXTENDING STRIPS SPACED OVER TE PERIPHERY OF THE TUBE, WHICH STRIPS DEFLECT THHE FLUID OUT OF THE FLOW CHANNELS AND INTO CONTACT WITH THE SURFACE OF THE BORE, WHICH SURFACE RE-DIRECTS IT INTO FURTHER CHANNELS DISPOSED BEYOND THE FIRST MENTIONED CHABNELS IN THE MAIN DIRECTION OF FLUID FLOW THROUGH THE BORE.
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |