Diaphragm bellows produced from profiled metal strip
AssigneeWestfalia Metallschlauchtechnik GmbH & Co. KG
InventorsMATTHIAS WEISS, Karl-Heinz Münker, Dietmar Baumhoff, Andreas Gerhard, Karsten Schenk, Michael Henkelmann, Oliver Selter, Stefan Hauk
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Abstract
A profiled metal strip for a diaphragm bellows is made from a strip material having at least one border which is subjected to reverse bending. Such a metal strip is wound to produce a diaphragm bellows, with abutting borders of neighboring turns being connected with one another by a material joint, such as a welding seam.
Claims29
A profiled metal strip for a diaphragm bellows, said metal strip being made from a strip material having at least one border which is subjected to reverse bending.
A diaphragm bellows, comprising at least one wound pre-profiled metal strip made from a strip material and having neighboring turns which are connected, at least in one area, by a material joint at their borders, wherein at least one border of the strip material of the metal strip is subjected to reverse bending.
A method of making a diaphragm bellows, comprising the steps of:
- producing at least one pre-profiled metal strip from a strip material with at least one border which is subjected to reverse bending;
- winding the metal strip to produce a spiral-shaped structure;
- and
- joining adjacent borders of neighboring turns of the structure by a material joint.
Dependencies are inferred from the claim text.