Witzenmann Gmbh

Matthias Farr

Jochen Glas

Thomas Herr

Stefan Keller

A flexible pipe element is provided formed as a metal bellows with at least one corrugated bellows section and a bellows brim, which forms one end of the metal bellows, and a connection element for connecting the metal bellows to a continuing pipe part or to a connector, with the connection element having a connection area for abutting a contact area of the bellows brim. An annular bulge is formed in the contact area of the bellows brim and/or in the connection area of the connection element projecting beyond an average level of the contact area and/or an average level of the connection area in order to form a linear seal between the contact area and the connection area. A method for producing such a flexible line part is also provided.

Flexible pipe element and method for inserting a seal in a flexible pipe element

A method for cutting a wound hose (), made from mutually engaging windings () of a metallic tape (), with the wound hose () being welded in a predetermined axial area () and then cut within the area () essentially in a plane () extending radially, with the wound hose () being axially compressed in the predetermined area prior to welding such that in the area () a mutual contacting of the windings () occurs. The welding is performed along a predetermined number of windings (-) in the area (), and the welding energy required for welding the windings is introduced via the area of the winding hose into it. Additionally, an accordingly produced wound hose () is provided and a device suitable for its production.

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Friolzheim, Germany

Matthias Farr