Patent US3793701A successfully refreshed from Google Patents.
US3793701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the connection by setting of collectors on water-boxes of heat exchangers
Assignee: Chausson Usines SA
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Filing: 1970-12-01
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Granted: 1974-02-26
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Expires: 1990-12-01
Abstract
Abstract The process for the connection by crimping of collectors on water-boxes of heat exchangers is characterized in that parts of the collector and the water-box are surrounded by an electrically conductive metallic belt which is then submitted to at least one high electromagnetic pulse.
Inventors
- 👤 A Chartet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:47
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0224; F28F9/0226; B; B21; B21D; B21D26/00; B21D26/14; B21D53/00; B21D53/02; B21D53/08; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28F2275/00; F28F2275/06; F28F2275/064; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A method for joining together two sections each having external flanges of substantially rectangular shape, comprising the steps of: positioning the two sections with their external flanges in engagement; disposing around said flanges an annular plastically deformable magnetically responsive metal ring approximating the crosssectional contour of the said flanges; disposing at least one substantially rectangular resilient electrically conductive metal collar in surrounding relation to said annular distortable ring; and connecting said at least one metal collar to a pulse power generator whereby said collar is energized thus magneto forming said ring while resiliently deforming a suitable portion of said collar whereby the ring will be uniformly deformed onto said flanges.
Claim 2
Independent Claim
110 words
A method for joining together two sections each having external flanges of substantially rectangular shape, comprising the steps of: positioning the two sections with their external flanges in engagement; disposing around said flanges an annular plastically deformable magnetically responsive metal ring approximating the crosssectional contour of the said flanges; disposing at least one substantially rectangular resilient electrically conductive metal collar in surrounding relation to said annular distortable ring; and connecting said at least one metal collar to a pulse power generator whereby said collar is energized thus magneto forming said ring while resiliently deforming a suitable portion of said collar whereby the ring will be uniformly deformed onto said flanges.
Claim 3
Dependent Claim
25 words
A method according to claim 1 comprising the further step on providing ribs on at least the external flange of one of said two sections.
Claim 4
Dependent Claim
23 words
A method according to claim 1 wherein said annular distortable ring is provided by fitting an extension on one of the two sections.
Claim 5
Dependent Claim
29 words
A method according to claim 1 wherein said annular distortable ring is provided by fitting an independent metal belt around said flanges between the same and said metal collar.
Claim 6
Dependent Claim
22 words
A method according to claim 1 comprising the further step of adjusting the shape of said metal collar at suitable portions thereof.
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |