EP 0395626 B1 19920923 - PREFORMED PART FOR MANUFACTURE OF TUBULAR PARTS WITH LONGITUDINAL SEAM AND TUBE MADE THEREFROM
Title (en)
PREFORMED PART FOR MANUFACTURE OF TUBULAR PARTS WITH LONGITUDINAL SEAM AND TUBE MADE THEREFROM
Publication
Application
Priority
AT 97789 A 19890424
Abstract (en)
[origin: EP0395626A1] A preformed part (20) used for the production of tubular parts with a longitudinal seam is bent parallel to the direction of the axis of the tube to be produced from the preformed part (20), the two seam-forming longitudinal edges (2, 3) of the preformed part (20) being at a distance from one another which permits the accommodation of a further preformed part (20). The preformed part (20) can be closed to form a tube piece. In order to take account of the different bending moments and the forces arising from the seaming operation, the preformed part (1) is prebent or edged to a lesser extent between the longitudinal edges (2, 3) than in the region of its longitudinal edges (2, 3). <IMAGE>
IPC 1-7
IPC 8 full level
B21C 37/10 (2006.01)
CPC (source: EP)
B21C 37/101 (2013.01); B21C 37/104 (2013.01)
Citation (examination)
SOVIET INVENTIONS ILLUSTRATED; P,Q Sektion, Woche C 29, 27. August 1980, DERWENT PIBLICATIONS LTD. * SU 700 230
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0395626 A1 19901031; EP 0395626 B1 19920923; AT 392026 B 19910110; AT A97789 A 19900715; AT E80815 T1 19921015; DE 59000313 D1 19921029
DOCDB simple family (application)
EP 90890108 A 19900409; AT 90890108 T 19900409; AT 97789 A 19890424; DE 59000313 T 19900409