US3435890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Babcock International Ltd
•
Filing: 1966-04-22
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Granted: 1969-04-01
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Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Junkermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:46
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/32; G21C1/326; F; F28; F28D; F28D7/00; F28D7/08; F28D7/082; F28D7/085; F28F; F28F13/00; F28F13/06; F28F9/00; F28F9/02; F28F9/026; F28F9/028; F28D21/00; F28D2021/0019; F28D2021/0054; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A HEAT EXCHANGER ARRANGED FOR DISPOSITION WITHIN AN ANNULAR FLUID FLOW PASSAGE AND COMPRISING A PLURALITY OF TUBULAR HEAT EXCHANGE SECTIONS DISPOSED IN SAID PASSAGE, EACH OF WHICH SUBSTANTIALLY FILLS A SECTOR-SHAPED PORTION OF SAID ANNULAR PASSAGE AND INCLUDES AN INLET HEADER EXTENDING THROUGH SAID PASSAGE IN A DIRECTION RADIAL THERETO, A PLURALITY OF MULTI-LOOPED TUBULAR HEAT EXCHANGE ELEMENTS CONNECTED WITH SAID HEADER AND ARRANGED IN EQUALLY SPACED PARALLEL PLANES PERPENDICULAR TO SAID RADIAL DIRECTION, EACH ELEMENT BEING WIDER THAN THE ELEMENT INWARDLY ADJACENT THERETO TO AN EXTENT DETERMINED BY THE DISTANCE BETWEEN THE ELEMENTS, WHEREBY THE OUTER EXTREMITIES OF THE ELEMENTS ARE ALIGNED IN INTERSECTING PLANES SO AS TO FORM A SECTOR-SHAPED HEAT EXCHANGER SECTION.
Claim 2
Dependent Claim
117 words
IN A HEAT EXCHANGER ARRANGED FOR DISPOSITION WITHIN AN ANNULAR FLUID FLOW PASSAGE AND COMPRISING A PLURALITY OF TUBULAR HEAT EXCHANGE SECTIONS DISPOSED IN SAID PASSAGE, EACH OF WHICH SUBSTANTIALLY FILLS A SECTOR-SHAPED PORTION OF SAID ANNULAR PASSAGE AND INCLUDES AN INLET HEADER EXTENDING THROUGH SAID PASSAGE IN A DIRECTION RADIAL THERETO, A PLURALITY OF MULTI-LOOPED TUBULAR HEAT EXCHANGE ELEMENTS CONNECTED WITH SAID HEADER AND ARRANGED IN EQUALLY SPACED PARALLEL PLANES PERPENDICULAR TO SAID RADIAL DIRECTION, EACH ELEMENT BEING WIDER THAN THE ELEMENT INWARDLY ADJACENT THERETO TO AN EXTENT DETERMINED BY THE DISTANCE BETWEEN THE ELEMENTS, WHEREBY THE OUTER EXTREMITIES OF THE ELEMENTS ARE ALIGNED IN INTERSECTING PLANES SO AS TO FORM A SECTOR-SHAPED HEAT EXCHANGER SECTION.
References Cited (Backward Citations)
US2729433A
Cited
US3310104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |