US3242983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger apparatus
Assignee: Chevron USA Inc
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Filing: 1965-01-14
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Granted: 1966-03-29
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Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Nevers Noel H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:05
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1638; F28D7/1646; F28D7/06; F28F; F28F9/00; F28F9/22; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/416; Y10S165/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN SHELL AND TUBE HEAT EXCHANGER APPARATUS COMPRISING AN ELONGATED HEAT EXCHANGER SHELL HAVING AN AXIS AND A SIDEWALL, A FLUID INLET FOR A FIRST FLUID AT ONE END THEREOF AND A FLUID OUTLET FOR SAID FIRST FLUID AT THE OTHER END THEREOF, THE IMPROVEMENT WHICH COMPRISES A BUNDLE OF ELONGATED TUBES LONGITUDINALLY DISPOSED IN SAID SHELL FOR PASSAGE OF A SECOND FLUID WITHIN SAID TUBES IN TWO PASSES THROUGH SAID SHELL, INLET MEANS AT ONE END OF SAID SHELL FOR CONVEYING SAID SECOND FLUID INTO SAID TUBES WITHOUT PHISICAL CONTACT WITH SAID FIRST FLUID AND OUTLET MEANS AT THE OTHER END OF SAID SHELL FOR CONVEYING SAID SECOND FLUID FROM SAID TUBES WITHOUT PHYSICAL CONTACT WITH SAID FIRST FLUID, SAID BUNDLE INCLUDING THE COMBINATION OF A MULTIPLICITY OF TUBES OF RELATIVELY SMALL CIRCULAR CROSS SECTION FOR SAID FIRST PASSES OF SAID SECOND FLUID THROUGH SAID APPARATUS IN COUNTERCURRENT FLOW WITH THE PASS OF SAID FIRST
Claim 2
Dependent Claim
156 words
IN SHELL AND TUBE HEAT EXCHANGER APPARATUS COMPRISING AN ELONGATED HEAT EXCHANGER SHELL HAVING AN AXIS AND A SIDEWALL, A FLUID INLET FOR A FIRST FLUID AT ONE END THEREOF AND A FLUID OUTLET FOR SAID FIRST FLUID AT THE OTHER END THEREOF, THE IMPROVEMENT WHICH COMPRISES A BUNDLE OF ELONGATED TUBES LONGITUDINALLY DISPOSED IN SAID SHELL FOR PASSAGE OF A SECOND FLUID WITHIN SAID TUBES IN TWO PASSES THROUGH SAID SHELL, INLET MEANS AT ONE END OF SAID SHELL FOR CONVEYING SAID SECOND FLUID INTO SAID TUBES WITHOUT PHISICAL CONTACT WITH SAID FIRST FLUID AND OUTLET MEANS AT THE OTHER END OF SAID SHELL FOR CONVEYING SAID SECOND FLUID FROM SAID TUBES WITHOUT PHYSICAL CONTACT WITH SAID FIRST FLUID, SAID BUNDLE INCLUDING THE COMBINATION OF A MULTIPLICITY OF TUBES OF RELATIVELY SMALL CIRCULAR CROSS SECTION FOR SAID FIRST PASSES OF SAID SECOND FLUID THROUGH SAID APPARATUS IN COUNTERCURRENT FLOW WITH THE PASS OF SAID FIRST
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |