US4044443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for assembling tubes and tube plates and product resulting therefrom
Assignee: Chausson Usines SA
•
Filing: 1975-04-28
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Granted: 1977-08-30
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Expires: 1995-04-28
Abstract
Abstract Tube passages slightly bigger than the tubes are formed in a plate. A soft resilient sheet is placed on one side of the plate. The tube is forcibly inserted in the tube passages and draws a portion of the sheet which is then cut. In the assembly of the sheet, which has a bigger thickness than the interval between the tube and the tube passage, forms a flange beyond the tube plate.
Inventors
- 👤 Andre Chartet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/06; F28F9/14; F16; F16L; F16L41/00; F16L41/001; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; Y; Y10; Y10S; Y10S165/00; Y10S165/906; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49352; Y10T29/49373; Y10T29/49826; Y10T29/49833; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A method of assembling at least one tube having an outer wall in a tube plate comprising the steps of: forming at least one tube passage in said plate, said tube passage having a shape corresponding to that of said tube and a cross-section slightly greater than that of said tube; placing a flexible, resilient sheet of substantially uniform thickness on one side of and in a planar coextensive relationship with said tube plate; bringing an end of said tube into contact with said flexible, resilient sheet; forcibly inserting said tube while in contact with said flexible, resilient sheet into said tube passage of said tube plate and beyond, a portion of said flexible, resilient sheet thus covering an end portion of said tube which extends beyond said plate; and cutting said portion of said sheet, whereby the inner stress of the material constituting said sheet restricts said portion of said sheet extending beyond said tube plate while forming a stressed flange pressing said outer wall of said tube and bearing on said tube plate.
Claim 2
Independent Claim
175 words
A method of assembling at least one tube having an outer wall in a tube plate comprising the steps of: forming at least one tube passage in said plate, said tube passage having a shape corresponding to that of said tube and a cross-section slightly greater than that of said tube; placing a flexible, resilient sheet of substantially uniform thickness on one side of and in a planar coextensive relationship with said tube plate; bringing an end of said tube into contact with said flexible, resilient sheet; forcibly inserting said tube while in contact with said flexible, resilient sheet into said tube passage of said tube plate and beyond, a portion of said flexible, resilient sheet thus covering an end portion of said tube which extends beyond said plate; and cutting said portion of said sheet, whereby the inner stress of the material constituting said sheet restricts said portion of said sheet extending beyond said tube plate while forming a stressed flange pressing said outer wall of said tube and bearing on said tube plate.
Claim 3
Dependent Claim
40 words
A method as set forth in claim 1, wherein said sheet when unstressed has a thickness greater than the distance separating said outer wall of said tube from the inner wall of said tube passage formed in said tube plate.
Claim 4
Dependent Claim
51 words
A method as set forth in claim 1, wherein said tube passage formed in the tube plate is enlarged in its inlet portion from which said sheet made of flexible resilient material and said end portion of said tube are inserted to facilitate sliding of said sheet into said tube plate.
Claim 5
Dependent Claim
39 words
A method as set forth in claim 1, wherein said portion of said flexible, resilient sheet covering said and portion of said tube is cut away by means of a die cooperating with said tube acting as a punch.
Claim 6
Dependent Claim
47 words
A method as set forth in claim 1, wherein said portion of said flexible, resilient sheet covering said end portion of said tube is cut away by means of a punch cooperating with that end of said tube which extends beyond said plate working as a die.
Claim 7
Dependent Claim
59 words
A method as set forth in claim 1, wherein a sharp edge is formed at that end of said tube which extends beyond said plate, said sharp edge being followed by a ramp whereby cutting of said flexible, resilient sheet is ensured by said edge upon end of the insertion of said tube into said tube plate and beyond.
Claim 8
Dependent Claim
25 words
A method as set forth in claim 6, wherein said sharp endge is formed at said end of a reduced diameter portion of said tube.
References Cited (Backward Citations)
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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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |