US3339631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger utilizing vortex flow
Assignee: Individual
•
Filing: 1966-07-13
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Granted: 1967-09-05
•
Expires: 1986-07-13
Abstract
No abstract record available.
Inventors
- 👤 James A Mcgurty
- 👤 William C Necker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
F; F28; F28F; F28F13/00; F22; F22B; F22B1/00; F22B1/02; F22B1/08; F22B1/12; F22B1/123; F22B37/00; F22B37/02; F22B37/10; F28D; F28D7/00; F28D7/02; F28F1/00; F28F1/10; F28F1/12; F28F1/122; F28F13/06; F28F13/08; G; G21; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/08; G21C15/00; G21C15/02; F28D21/00; F28D2021/0019; F28D2021/0054; F28D2021/0061; F28D2021/0064; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901; Y10S376/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
APPARATUS FOR INCREASING THE BURNOUT HEAT FLUX IN A HEAT EXCHANGE MEMBER WHEREIN LIQUID COOLANT IS PASSED THROUGH A CYLINDRICAL PASSAGEWAY IN SAID HEAT EXCHANGE MEMBER AND VAPORIZED, COMPRISING: AN ELONGATED INSERT DISPOSED COAXIALLY WITHIN SAID COOLANT CHANNEL AND EXTENDING ALONG THE LENGTH THEREOF, SAID PASSAGEWAY HAVING AN INLET END FOR RECEIVING LIQUID COOLANT AND AN EXHAUST END FOR DISCHARGING VAPORIZED COOLANT, SAID INSERT COMPRISING A UNIFORMLY TAPERED SHANK PORTION HAVING A CIRCULAR CROSS SECTION AND A HELICAL RIB SPIRALLING AROUND SAID SHANK PORTION, THE LARGER DIAMETER END OF SAID SHANK PORTION BEING DISPOSED AT THE INLET END OF SAID PASSAGEWAY, SAID HELICAL RIB HAVING A RADIAL PERIPHERY WHOSE DIAMETER IS SUBSTANTIALLY EQUAL TO THE DIAMETER OF SAID PASSAGEWAY.
Claim 2
Dependent Claim
119 words
APPARATUS FOR INCREASING THE BURNOUT HEAT FLUX IN A HEAT EXCHANGE MEMBER WHEREIN LIQUID COOLANT IS PASSED THROUGH A CYLINDRICAL PASSAGEWAY IN SAID HEAT EXCHANGE MEMBER AND VAPORIZED, COMPRISING: AN ELONGATED INSERT DISPOSED COAXIALLY WITHIN SAID COOLANT CHANNEL AND EXTENDING ALONG THE LENGTH THEREOF, SAID PASSAGEWAY HAVING AN INLET END FOR RECEIVING LIQUID COOLANT AND AN EXHAUST END FOR DISCHARGING VAPORIZED COOLANT, SAID INSERT COMPRISING A UNIFORMLY TAPERED SHANK PORTION HAVING A CIRCULAR CROSS SECTION AND A HELICAL RIB SPIRALLING AROUND SAID SHANK PORTION, THE LARGER DIAMETER END OF SAID SHANK PORTION BEING DISPOSED AT THE INLET END OF SAID PASSAGEWAY, SAID HELICAL RIB HAVING A RADIAL PERIPHERY WHOSE DIAMETER IS SUBSTANTIALLY EQUAL TO THE DIAMETER OF SAID PASSAGEWAY.
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |