Patent US3294162A successfully refreshed from Google Patents.
US3294162A
Expired / Lapsed
US
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Heat exchanger construction and method for making the same
Assignee: Reynolds Metals Co
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Filing: 1963-12-23
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Granted: 1966-12-27
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Harold J Loehlein
- 👤 Edward E Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:45
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/06; B21D53/04; F; F28; F28F; F28F1/00; F28F1/10; F28F1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A HEAT EXCHANGER COMPRISING A HOLLOW TUBULAR MEMBER HAVING OUTWARDLY DIRECTED FLANGE MEANS INTEGRALLY INTERCONNECTED TO THE OUTER PERIPHERAL SURFACE OF SAID MEMBER, SAID FLANGE MEANS DEFINING A FIN HAVING THE BASE THEREOF SUBSTANTIALLY PARALLEL WITH THE LONGITUDINAL AXIS OF SAID TUBULAR MEMBER AND HAVING THE REMAINDER THEREOF DISPOSED AT AN ANGLE RELATIVE TO SAID AXIS, SAID REMAINDER OF SAID FIN BEING OPPOSITELY CURVED AT THE TOP AND BOTTOM ENDS THEREOF WHEREBY SAID FIN PROVIDES TURBULENCE TO FLUID FLOW PASSING TRANSVERSELY RELATIVE TO SAID LONGITUDINAL AXIS.
Claim 2
Dependent Claim
86 words
A HEAT EXCHANGER COMPRISING A HOLLOW TUBULAR MEMBER HAVING OUTWARDLY DIRECTED FLANGE MEANS INTEGRALLY INTERCONNECTED TO THE OUTER PERIPHERAL SURFACE OF SAID MEMBER, SAID FLANGE MEANS DEFINING A FIN HAVING THE BASE THEREOF SUBSTANTIALLY PARALLEL WITH THE LONGITUDINAL AXIS OF SAID TUBULAR MEMBER AND HAVING THE REMAINDER THEREOF DISPOSED AT AN ANGLE RELATIVE TO SAID AXIS, SAID REMAINDER OF SAID FIN BEING OPPOSITELY CURVED AT THE TOP AND BOTTOM ENDS THEREOF WHEREBY SAID FIN PROVIDES TURBULENCE TO FLUID FLOW PASSING TRANSVERSELY RELATIVE TO SAID LONGITUDINAL AXIS.
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |