US3379244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Waagner Biro AG
•
Filing: 1965-04-05
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Granted: 1968-04-23
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Expires: 1985-04-05
Abstract
No abstract record available.
Inventors
- 👤 Gilli Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/08; F28D7/04; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/414
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A HEAT EXCHANGER COMPRISING, IN COMBINATION, A VESSEL HAVING A MAIN AXIS AND INLET AND OUTLET MEANS FOR A FIRST FLUID; AND PIPE MEANS LOCATED IN THE INTERIOR OF SAID VESSEL AND HAVING INLET ANDOUTLET MEANS FOR A SECOND FLUID, SAID PIPE MEANS INCLUDING A PLURALITY OF HEAT EXCHANGING PIPES, EACH PIPE HAVING SIMILARLY CURVED MAIN PIPE PORTIONS EXTENDING BETWEEN A CENTRAL PART AND AN OUTER PART OF SAID INTERIOR OF SAID VESSEL IN SUPERIMPOSED SPACED PLANES SUBSTANTIALLY TRANSVERSE TO SAID MAIN AXIS, EACH SIMILARLY CURVED MAIN PIPE PORTION OF EACH OF SAID PIPES BEING LOCATED ANGULARLY OFFSET RELATIVE TO SUCH MAIN PIPE PORTIONS OF THE SAME PIPE WHICH ARE LOCATED IN ADJACENT ONES OF SAID SUPERIMPOSED SPACED PLANES, AND A PLURALITY OF CURVED CONNECTING PIPE PORTIONS EACH CONNECTING THE ENDS OF TWO MAIN PIPE PORTIONS OF THE SAME PIPE WHICH ARE LOCATED IN ADJACENT SUPERIMPOSED SPACED PLANES AND WHICH ARE ANGULARLY OFFSET SO THAT SAID CURVED CONNECTING PIPE PORTIONS ARE INCLINED TO SAID MAIN AXIS, SAID CURVED CONNECTING PIPE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN HALF THE DISTANCE BETWEEN ADJACENT SUPERIMPOSED SPACED PLANES.
Claim 2
Dependent Claim
186 words
A HEAT EXCHANGER COMPRISING, IN COMBINATION, A VESSEL HAVING A MAIN AXIS AND INLET AND OUTLET MEANS FOR A FIRST FLUID; AND PIPE MEANS LOCATED IN THE INTERIOR OF SAID VESSEL AND HAVING INLET ANDOUTLET MEANS FOR A SECOND FLUID, SAID PIPE MEANS INCLUDING A PLURALITY OF HEAT EXCHANGING PIPES, EACH PIPE HAVING SIMILARLY CURVED MAIN PIPE PORTIONS EXTENDING BETWEEN A CENTRAL PART AND AN OUTER PART OF SAID INTERIOR OF SAID VESSEL IN SUPERIMPOSED SPACED PLANES SUBSTANTIALLY TRANSVERSE TO SAID MAIN AXIS, EACH SIMILARLY CURVED MAIN PIPE PORTION OF EACH OF SAID PIPES BEING LOCATED ANGULARLY OFFSET RELATIVE TO SUCH MAIN PIPE PORTIONS OF THE SAME PIPE WHICH ARE LOCATED IN ADJACENT ONES OF SAID SUPERIMPOSED SPACED PLANES, AND A PLURALITY OF CURVED CONNECTING PIPE PORTIONS EACH CONNECTING THE ENDS OF TWO MAIN PIPE PORTIONS OF THE SAME PIPE WHICH ARE LOCATED IN ADJACENT SUPERIMPOSED SPACED PLANES AND WHICH ARE ANGULARLY OFFSET SO THAT SAID CURVED CONNECTING PIPE PORTIONS ARE INCLINED TO SAID MAIN AXIS, SAID CURVED CONNECTING PIPE PORTIONS HAVING A RADIUS OF CURVATURE GREATER THAN HALF THE DISTANCE BETWEEN ADJACENT SUPERIMPOSED SPACED PLANES.
References Cited (Backward Citations)
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Cited
US3126949A
Cited
US2402881A
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US2479071A
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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) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |