Patent US3889745A successfully refreshed from Google Patents.
US3889745A
Expired / Lapsed
US
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Heat exchanger and method of making same
Assignee: Reynolds Metals Co
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Filing: 1973-12-19
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Granted: 1975-06-17
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Expires: 1993-12-19
Abstract
Abstract A heat exchanger and method of making same is provided and such heat exchanger comprises a plurality of tubes arranged in parallel relation and a plurality of planar fins each having integral tubular collars extending therefrom which engage and are supported concentrically around the tubes with the collars extending from each planar fin being defined by a first set of collars extending in one direction and a second set of collars extending in a direction opposite from the one direction. The fins are fixed against the tubes in substantially parallel relation with the first set of collars of one fin adjoining and cooperating with the second set of collars of an immediately adjacent fin to provide a precise spacing between fins along the tubes.
Inventors
- 👤 Frederik A Siemonsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/084; B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; B21D53/085; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/50; Y10S165/501
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
A HEAT EXCHANGER CORE ASSEMBLY COMPRISING A PLURALITY OF TUBES ARRANGED IN SUBSTANTIALLY PARALLEL RELATION AND A PLURALITY OF FINS MADE OF AN ALUMINOUS MATERIAL HAVING AN H-19 TEMPER, EACH OF SAID FINS COMPRISING A SUBSTANTIALLY PLANAR SHEET AND TWO SETS OF TUBULAR COLLARS WHICH ARE INTEGRAL WITH SAID PLANAR SHEET AND WHICH ENGAGE AND ARE SUPPORTED CONCENTRICALLY AROUND SAID TUBES, ONE OF SAID SETS OF TUBULAR COLLARS EXTENDING IN ONE DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE PLANE OF SAID PLANAR SHEET AND THE OTHER OF SAID SETS OF COLLARS EXTENDING IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION, SAID FINS BEING FIXED AGAINST SAID TUBES IN A RELATION WHEREIN THE PLANE DEFINED BY EACH SAID PLANAR SHEET IS SUBSTANTIALLY PERPENDICULAR TO THE LONGITUDINAL AXIS OF EACH OF SAID TUBES WITH THE SAID ONE SET OF COLLARS OF ONE SAID FIN ADJOINING AND COOPERATING WITH THE END OTHER SET OF COLLARS OF AN IMMEDIATELY ADJACENT FIN TO PROVIDE A SPACING BETWEEN SAID ONE AND IMMEDIATELY ADJACENT FIN.
Claim 2
Dependent Claim
166 words
A HEAT EXCHANGER CORE ASSEMBLY COMPRISING A PLURALITY OF TUBES ARRANGED IN SUBSTANTIALLY PARALLEL RELATION AND A PLURALITY OF FINS MADE OF AN ALUMINOUS MATERIAL HAVING AN H-19 TEMPER, EACH OF SAID FINS COMPRISING A SUBSTANTIALLY PLANAR SHEET AND TWO SETS OF TUBULAR COLLARS WHICH ARE INTEGRAL WITH SAID PLANAR SHEET AND WHICH ENGAGE AND ARE SUPPORTED CONCENTRICALLY AROUND SAID TUBES, ONE OF SAID SETS OF TUBULAR COLLARS EXTENDING IN ONE DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE PLANE OF SAID PLANAR SHEET AND THE OTHER OF SAID SETS OF COLLARS EXTENDING IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION, SAID FINS BEING FIXED AGAINST SAID TUBES IN A RELATION WHEREIN THE PLANE DEFINED BY EACH SAID PLANAR SHEET IS SUBSTANTIALLY PERPENDICULAR TO THE LONGITUDINAL AXIS OF EACH OF SAID TUBES WITH THE SAID ONE SET OF COLLARS OF ONE SAID FIN ADJOINING AND COOPERATING WITH THE END OTHER SET OF COLLARS OF AN IMMEDIATELY ADJACENT FIN TO PROVIDE A SPACING BETWEEN SAID ONE AND IMMEDIATELY ADJACENT FIN.
Claim 3
Dependent Claim
33 words
An assembly as set forth in claim 1 in which each of said collars has an outwardly flared terminal end portion which enables easier sliding thereof along its associated tube for fin-stacking purposes.
Claim 4
Dependent Claim
25 words
An assembly as set forth in claim 1 in which each of said fins has a thickness ranging roughly between 0.010 inch and 0.002 inch.
Claim 5
Dependent Claim
31 words
An assembly as set forth in claim 1 in which said collars are arranged in a plurality of parallel rows and immediately adjacent collars in each row extend in opposite directions.
Claim 6
Dependent Claim
25 words
An assembly as set forth in claim 4 in which said collars in an immediately adjacent pair of parallel rows are arranged in staggered relation.
Claim 7
Dependent Claim
54 words
An assembly as set forth in claim 4 in which said collars in each row have an equal spacing therebetween, said parallel rows have said equal spacing in a direction perpendicular thereto, and the collars in a row immediately adjacent another row are staggered roughly one-half way between the collars in said other row.
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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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |