Patent US3708012A successfully refreshed from Google Patents.
US3708012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Modine Manufacturing Co
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Filing: 1971-05-11
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Granted: 1973-01-02
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Expires: 1991-05-11
Abstract
Abstract A heat exchanger such as a radiator including heat exchange tubes for a fluid and a heat exchange wall such as a header with an opening into which each tube extends and an exterior flange on each tube extending generally longitudinally of the tube and substantially spanning the space between the tube and the opening. Joining metal is provided in the opening uniting the tube, the flange and the wall at the opening with the joining metal when in the molten state wetting the tube, flange and wall in the region of the opening. The flange comprises a relatively soft metal such as aluminum for easy removal of the outer edge of the flange as by peeling it back when the opening is smaller than the space spanned by the tube plus the flange.
Inventors
- 👤 J Zimprich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:39
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/18; F28F9/182; F28F1/00; F28F1/02; F28F1/022; F28F2235/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49391
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A heat exchanger, comprising: a tube for a heat exchange fluid; a heat exchange wall with an opening therein into which said tube extends; an exterior flange means on said tube extending generally longitudinally on the tube, said flange means being in contact with said wall at said opening when said opening is larger than said tube at said flange means and thereby substantially spanning the resulting space between said tube and said opening; and joining metal filling said space and uniting said tube, flange and wall at said opening, said joining metal when in the molten state wetting said tube, flange and wall in the region of said opening prior to and during solidification of said joining metal, said flange means comprising a relatively soft metal for easy removal of the outer edge of the flange means when the opening is smaller than the space spanned by the tube plus flange means.
Claim 2
Dependent Claim
153 words
A heat exchanger, comprising: a tube for a heat exchange fluid; a heat exchange wall with an opening therein into which said tube extends; an exterior flange means on said tube extending generally longitudinally on the tube, said flange means being in contact with said wall at said opening when said opening is larger than said tube at said flange means and thereby substantially spanning the resulting space between said tube and said opening; and joining metal filling said space and uniting said tube, flange and wall at said opening, said joining metal when in the molten state wetting said tube, flange and wall in the region of said opening prior to and during solidification of said joining metal, said flange means comprising a relatively soft metal for easy removal of the outer edge of the flange means when the opening is smaller than the space spanned by the tube plus flange means.
Claim 3
Dependent Claim
20 words
The heat exchanger of claim 1 wherein said flange means comprises a spaced pair of said flanges on said tube.
Claim 4
Dependent Claim
25 words
The heat exchanger of claim 2 wherein said tube is of oval cross section and said flanges are located at the ends of the oval.
Claim 5
Dependent Claim
13 words
The heat exchanger of claim 1 wherein said flange means metal comprises aluminum.
Claim 6
Dependent Claim
28 words
The heat exchanger of claim 1 wherein said wall comprises a header, and there are provided a plurality of spaced said tubes each positioned in its said opening.
Claim 7
Dependent Claim
41 words
The heat exchanger of claim 5 wherein each said flange means comprises a spaced pair of said flanges on said tube, and wherein said tube is of oval cross section and said flanges are located at the ends of the oval.
Claim 8
Dependent Claim
13 words
The heat exchanger of claim 6 wherein said flange means metal comprises aluminum.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |