Patent US4324290A successfully refreshed from Google Patents.
US4324290A
Expired / Lapsed
US
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Heat exchanger comprising a core of tubes engaged inside end plates mechanically connected with header boxes
Assignee: Chausson Usines SA
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Filing: 1980-10-27
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Granted: 1982-04-13
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Expires: 2000-10-27
Abstract
Abstract The heat exchanger comprises a core of tubes engaged into tubes plates defining a peripheral groove bounded outwardly by a raised edge with a sealing gasket being placed in the bottom of the groove in order to be clamped by under side of an edge of a header box maintained by gripping means. The header box is thin walled and the edge of said header box has a top portion with a small bar interposed between said top portion and said gripping means.
Inventors
- 👤 Jean-Pierre Moranne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:09
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0224; F28F9/0226; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/0535; F28F2275/00; F28F2275/12; F28F2275/122; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/473; Y10S165/474
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A heat exchanger of the type including a core of tubes (1) engaged in tube plates (3) that have a peripheral groove (4) bounded outwardly by a raised edge (5), with a sealing gasket (9) on the bottom of the groove in order to be clamped by under side of an edge of a header box (6) maintained by gripping means (13), characterized in that the header box is thin walled and in that the edge of said header box has a top portion with a small bar (10) interposed between said top portion and said gripping means.
Claim 2
Dependent Claim
98 words
A heat exchanger of the type including a core of tubes (1) engaged in tube plates (3) that have a peripheral groove (4) bounded outwardly by a raised edge (5), with a sealing gasket (9) on the bottom of the groove in order to be clamped by under side of an edge of a header box (6) maintained by gripping means (13), characterized in that the header box is thin walled and in that the edge of said header box has a top portion with a small bar (10) interposed between said top portion and said gripping means.
Claim 3
Dependent Claim
22 words
A heat exchanger according to claim 1, wherein said gripping means are crimping portions extending the raised edge of the tube plates.
Claim 4
Dependent Claim
15 words
A heat exchanger according to claim 1, wherein said gripping means is an added clip.
Claim 5
Dependent Claim
32 words
A heat exchanger according to claim 1, wherein the small bar (10) is made of a hard material substantially non deformable with regards to the efforts applied thereto by the gripping means.
Claim 6
Dependent Claim
26 words
A heat exchanger according to claim 1, wherein the small bar (10) extends all around the tube plate and the header box which is covering it.
Claim 7
Dependent Claim
45 words
A heat exchanger according to claim 1, wherein the small bar (10) is formed by a part having a shape taken among that of a rectangular frame, a half-frame and beads, cross-sectional dimensions of the part corresponding to the groove formed in the tube plate.
Claim 8
Dependent Claim
59 words
A heat exchanger according to claim 1, wherein the small bar (10) have a shape taken among that of a rectangular frame and half-frame, said small bar corresponding in dimensions of the largest tube plates used in manufacture, and wherein said small bar is cut in its sides so as to be adapted to tube plates of smaller dimensions.
Claim 9
Dependent Claim
51 words
A heat exchanger according to claim 1, wherein the header box (6) is formed, beyond its edge, with a raised portion (8), and wherein the small bar has a thickness which is superior to height of said raised portion by forming a shoulder (11) covering the end of said raised portion.
Claim 10
Dependent Claim
26 words
A heat exchanger according to claim 1, wherein at least the edge (10b) of the small bar which is turned towards the gripping means is rounded.
Claim 11
Dependent Claim
24 words
A heat exchanger according to claim 1, wherein the gripping means are formed by lugs (13) folded over on top of the small bars.
Claim 12
Dependent Claim
31 words
A heat exchanger according to claim 10, wherein the small bars are formed, opposite the lugs, with notches (15) having a curved bottom and on which the lugs (13) are applied.
Claim 13
Dependent Claim
22 words
A heat exchanger according to claim 11, wherein the curve of the bottom of the notches (15) is of a concave shape.
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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) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |