Folded-seam connection, method of producing it and device

Details Folded-seam connection, method of producing it and device Folded-seam connection, method of producing it and device

2006-10-17

2006-10-17

Omgba, Essama (Department: 3726)

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

C072S107000, C029S511000, C029S243580

Reexamination Certificate

active

07121129

ABSTRACT:
In ventilation and air-conditioning technology, so-called spiral pipes have to be joined together in a tightly sealed manner at widely differing angles, which is generally carried out by segment bends and pipe sections. An improved, durable seal of folded-seam connections is achieved by a flange-like double fold which is arranged at a first pipe end and which is surrounded on the outside at least in part with positive locking and with a continuous metal seal, by a second double fold at the second pipe end.

REFERENCES:
patent: 2150361 (1939-03-01), Chobert
patent: 3490137 (1970-01-01), Buck et al.
patent: 3724255 (1973-04-01), Molino
patent: 3815394 (1974-06-01), Walker
patent: 3848308 (1974-11-01), Kaval
patent: 4505084 (1985-03-01), Knudson
patent: 4538334 (1985-09-01), Binggeli
patent: 4579375 (1986-04-01), Fischer et al.
patent: 5875670 (1999-03-01), Stojkovski et al.
patent: 6311379 (2001-11-01), Torre et al.
patent: 6598285 (2003-07-01), Binggeli et al.
patent: 25 44 875 (1977-04-01), None
patent: 34 04 057 (1985-08-01), None
patent: 87 08 142 (1987-07-01), None
patent: WO 00/27557 (2000-05-01), None
Definition of EUROVENT Class C: European Standard DIN EN 12237, “Strength and leakage of circular sheet metal ducts,” European Committee for Standardization, Brussels, Jul. 2003. See p. 6, 4 Classification, “Air tightness class” C, (3rdline).
“Gorelocker Beta 3” brochure May 1998 (in German), of Spiro International S.A. , 1998 (4 sheets).
Gorelocker Beta 3 brochure Apr. 2001 (in English) of Spiro International S.A., 2001 (4 sheets).

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