Global Patent Index - EP 0976466 A3

EP 0976466 A3 2000-10-18 - Method and device for the manufacture of a tube from strip material

Title (en)

Method and device for the manufacture of a tube from strip material

Title (de)

Verfahren und Vorrichtung zum Herstellen eines Rohres aus Bandmaterial

Title (fr)

Procédé et dispositif pour la fabrication d'un tube à partir de matériau en bande

Publication

EP 0976466 A3 (DE)

Application

EP 99109817 A

Priority

DE 19834400 A

Abstract (en)

[origin: DE19834400C1] The method of making thin wall metal tubes involves cold forming a thin metal blank into an increasing curved section with the edges (4) closed and then welded together. The partially formed blank (3) is first twisted around a quarter turn and, prior to welding closed, is rotated back slightly. The claims also include a machine for carrying out the method.

IPC 1-7 (main, further and additional classification)

B21C 37/08

IPC 8 full level (invention and additional information)

B21C 37/08 (2006.01); B21C 37/083 (2006.01); B21D 5/12 (2006.01)

CPC (invention and additional information)

B21C 37/08 (2013.01); B21C 37/083 (2013.01); B21D 5/12 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19834400 C1 20000105; AT 222149 T 20020815; DK 0976466 T3 20021216; EP 0976466 A2 20000202; EP 0976466 A3 20001018; EP 0976466 B1 20020814; ES 2182429 T3 20030301

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