US3583478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multitube radiator
Assignee: Valeo SE
•
Filing: 1968-07-22
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Granted: 1971-06-08
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Expires: 1988-07-22
Abstract
Abstract A multitube radiator, intended for use in the air-conditioning systems of motor vehicles or for cooling engines, in which the tubes are mounted between two plates or manifolds defining covered fluid chambers or water tanks, to which pipes for the connection to the rest of the fluid circuit are connected. Each manifold has at least one flange, and a seal in the form of a ring of resilient material is inserted between the tube and the flange, so that, to fix a tube, the seal is previously placed in the flange on the manifold, and the tube, having been passed through the ring seal, is increased in diameter, providing both a mechanical connection and a fluidtight seal.
Inventors
- 👤 Walter Fieni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:41
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/06; F28F21/067; F16; F16L; F16L39/00; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D1/05333; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F28F9/00; F28F9/02; F28F9/0219; F28F9/0224; F28F9/0226; F28F9/04; F28F9/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A heat exchanger comprising two opposed and spaced manifolds, each manifold including a sheet having a plurality of openings with an annular flange encircling each opening, and a single sheetlike gasket of substantial flexible material urged against each manifold and having openings corresponding to the openings in said sheet and including a plurality of projecting annular flanges internally lining the flanges of said sheet, a plurality of tubes extending between said sheets and sealingly inserted into said annular flanges of the gaskets for the passage of a thermal fluid, each tube including end portions which are sealingly inserted into the annular flange of the associated gasket and include respective tubular end sections of greater diameter than the respective remaining portion of the tubes and further flared sections stemming from respective end sections outwardly over said sheetlike gaskets to crimp the same between the tube and the sheets, and a plurality of fins secured on said tubes, and two headers in sealed engagement with said sheets for defining two fluid chambers respectively connectable to an inlet and an outlet of said heat exchanger.
Claim 2
Dependent Claim
182 words
A heat exchanger comprising two opposed and spaced manifolds, each manifold including a sheet having a plurality of openings with an annular flange encircling each opening, and a single sheetlike gasket of substantial flexible material urged against each manifold and having openings corresponding to the openings in said sheet and including a plurality of projecting annular flanges internally lining the flanges of said sheet, a plurality of tubes extending between said sheets and sealingly inserted into said annular flanges of the gaskets for the passage of a thermal fluid, each tube including end portions which are sealingly inserted into the annular flange of the associated gasket and include respective tubular end sections of greater diameter than the respective remaining portion of the tubes and further flared sections stemming from respective end sections outwardly over said sheetlike gaskets to crimp the same between the tube and the sheets, and a plurality of fins secured on said tubes, and two headers in sealed engagement with said sheets for defining two fluid chambers respectively connectable to an inlet and an outlet of said heat exchanger.
Claim 3
Dependent Claim
44 words
The heaT exchanger of claim 1, wherein each gasket has an external edge and includes a rim defining a peripheral recess, said headers each having an edge corresponding in shape to the recess of the associated gasket and engaged in tight sealing engagement therein.
Claim 4
Dependent Claim
14 words
The heat exchanger of claim 1, wherein said tubes are aluminum or aluminum alloys.
Claim 5
Dependent Claim
44 words
The heat exchanger of claim 2, wherein said sheets each include a peripheral flange in the form of a tongue having ends bent around a rib provided on the associated header for assuring the sandwiching of said rim between said sheet and said header.
Claim 6
Dependent Claim
38 words
The heat exchanger of claim 1 further comprising a core inside at least some of said tubes limiting the flow of thermal fluid to the outer periphery of said tubes, said core being integrally molded with said header.
Claim 7
Dependent Claim
29 words
The heat exchanger of claim 1, wherein said header further comprises at least one tongue-shaped means molded integrally therewith for connectingly assembling said heat exchanger with an ancillary system.
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |