US3827485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger and method of manufacture therefor
Assignee: Brazeway Inc
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Filing: 1973-03-23
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Granted: 1974-08-06
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Expires: 1993-03-23
Abstract
Abstract A heat exchange apparatus comprising a tube and plate and a method of manufacture for the heat exchange apparatus. The method includes the steps of forming the tube, such as by extrusion, to provide an external attachment appendage which, in the illustrative embodiment, is T-shaped in cross section, forming spaced parallel slots in a thin plate, offsetting the material of the plate along and adjacent the slots to accommodate the Tshaped attachment appendage in sliding relationship therewith and, finally, compressing the tube against the plate to lock the two elements together and to provide a flush surface on the side of the plate which is opposite the tube.
Inventors
- 👤 S Hickman
- 👤 C Griewahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:28
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/08; B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/14; F28F1/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49364; Y10T29/49826; Y10T29/49838; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A method for assembling a tube and a plate for thermal transfer therebetween wherein the tube has formed integrally therewith an external attachment appendage, the method comprising the steps of: forming at least one slot in and through the plate, joining the appendage and slot forming an offset in the plate along and adjacent the slot, said offset being of appropriate configuration to receive said appendage, and compressing the tube against the plate to provide a mechanical bond between the tube and plate and a substantially flush surface on the side of the plate opposite the tube.
Claim 2
Independent Claim
97 words
A method for assembling a tube and a plate for thermal transfer therebetween wherein the tube has formed integrally therewith an external attachment appendage, the method comprising the steps of: forming at least one slot in and through the plate, joining the appendage and slot forming an offset in the plate along and adjacent the slot, said offset being of appropriate configuration to receive said appendage, and compressing the tube against the plate to provide a mechanical bond between the tube and plate and a substantially flush surface on the side of the plate opposite the tube.
Claim 3
Dependent Claim
45 words
The method defined in claim 1 including the step of forming the offset in the plate along and adjacent the slot before joining the appendage and slot, the slot and offset being substantially straight and corresponding in length to a straight segment of said tube.
Claim 4
Dependent Claim
45 words
A method as defined in claim 2 wherein said attachment appendage comprises a radial leg and a flat top leg, the top leg being disposed in said offset so as to form part of said flush surface after the compression step has been carried out.
Claim 5
Independent Claim
103 words
A method for assembling a tube having an external attachment appendage and a plate for thermal transfer between the tube and plate comprising the steps of extruding a metal tube having an integral attachment appendage along one side thereof, forming at least one slot in and through the plate, sliding the appendage into the slot, and compressing the tube against the plate to mechanically bond the plate and tube and to form an offset in said plate along and adjacent said slot which receives said appendage so that a substantially flush surface is provided on the side of the plate opposite the tube.
Claim 6
Independent Claim
103 words
A method for assembling a tube having an external attachment appendage and a plate for thermal transfer between the tube and plate comprising the steps of extruding a metal tube having an integral attachment appendage along one side thereof, forming at least one slot in and through the plate, sliding the appendage into the slot, and compressing the tube against the plate to mechanically bond the plate and tube and to form an offset in said plate along and adjacent said slot which receives said appendage so that a substantially flush surface is provided on the side of the plate opposite the tube.
Claim 7
Dependent Claim
49 words
The method defined in claim 4 including the further step of bending the tube to form a curved tube portion and a straight tube portion and trimming the attachment appendage from the tube along the curved portion, the straight portion corresponding in length to the length of the slot.
Claim 8
Dependent Claim
26 words
The method defined in claim 4 wherein the slot has a pair of terminal ends which are spaced from and within the boundaries of the plate.
Claim 9
Independent Claim
171 words
A method for assembling a tube having an external attachment appendage and a plate for thermal transfer between the tube and plate comprising the steps of: extruding a metallic tube having an integral T-shaped attachment appendage, bending the tube into a serpentine configuration having a plurality of curved portions and a plurality of parallel straight portions, trimming the external attachment appendage from the curved portions, forming a plurality of parallel slots in and through a metallic plate of such length and spacing as to correspond to the length and spacing of the straight portions of the tube, offsetting the plate along and adjacent to the slots by at least the thickness of the T-shaped attachment appendage, sliding the attachment appendage segments into the spaced slots and offset portions and compressing the tube against the plate with the plate between the tube and appendage top to provide a mechanical connection between the tube and plate and to further provide a substantially flush surface on the side of the plate opposite the tube.
Claim 10
Independent Claim
171 words
A method for assembling a tube having an external attachment appendage and a plate for thermal transfer between the tube and plate comprising the steps of: extruding a metallic tube having an integral T-shaped attachment appendage, bending the tube into a serpentine configuration having a plurality of curved portions and a plurality of parallel straight portions, trimming the external attachment appendage from the curved portions, forming a plurality of parallel slots in and through a metallic plate of such length and spacing as to correspond to the length and spacing of the straight portions of the tube, offsetting the plate along and adjacent to the slots by at least the thickness of the T-shaped attachment appendage, sliding the attachment appendage segments into the spaced slots and offset portions and compressing the tube against the plate with the plate between the tube and appendage top to provide a mechanical connection between the tube and plate and to further provide a substantially flush surface on the side of the plate opposite the tube.
Claim 11
Dependent Claim
65 words
A heat exchanger apparatus comprising: a tube having an integral attachment appendage, a plate having a through slot formed therein, and an offset along and adjacent the slot, said attachment appendage being disposed in said slot and offset and of such configuration as to provide a substantially flush surface on the side of the plate opposite the tube, the tube being compressed against the plate.
Claim 12
Dependent Claim
65 words
A heat exchanger apparatus comprising: a tube having an integral attachment appendage, a plate having a through slot formed therein, and an offset along and adjacent the slot, said attachment appendage being disposed in said slot and offset and of such configuration as to provide a substantially flush surface on the side of the plate opposite the tube, the tube being compressed against the plate.
Claim 13
Dependent Claim
34 words
A heat exchanger apparatus as defined in claim 8 wherein said tube includes at least one curve portion and at least one straight portion, the attachment appendage being disposed only along said straight portion.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |