EP 1183114 B1 20030115 - BENDING BLOCK FOR A BENDING DEVICE AND BENDING METHOD FOR TUBES
Title (en)
BENDING BLOCK FOR A BENDING DEVICE AND BENDING METHOD FOR TUBES
Title (de)
BIEGEDORN FÜR EINE BIEGEVORRICHTUNG UND BIEGEVERFAHREN FÜR ROHRE
Title (fr)
MANDRIN DE CINTRAGE POUR UN DISPOSITIF DE CINTRAGE, ET PROCEDE DE CINTRAGE DE TUYAUX
Publication
Application
Priority
- DE 19926330 A 19990609
- EP 0004361 W 20000516
Abstract (en)
[origin: US6658912B1] The invention relates to a bending mandrel for a bending device and also to a bending method for pipes, more particularly pipes which have a large diameter-to-wall thickness ratio and are to be bent by a small radius, for example, of the order of magnitude of the pipe diameter. To this end use is made of a bending mandrel (5, 6) to whose rigid head (5) assembly (6) of springy sheet metal lamellae (6a, 6b) is attached to improve the bendability of the bending mandrel (5, 6) while maintaining a satisfactory supporting action, the lamellae (6a), with the exception of the outer lamellae (6b), having window-like cutaway portions (6c).
IPC 1-7
IPC 8 full level
B21D 9/01 (2006.01); B21D 9/03 (2006.01); B21D 9/07 (2006.01)
CPC (source: EP US)
B21D 9/03 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6658912 B1 20031209; AT E231038 T1 20030215; DE 19926330 A1 20001221; DE 19926330 C2 20010809; DE 50001106 D1 20030220; EP 1183114 A1 20020306; EP 1183114 B1 20030115; ES 2189761 T3 20030716; WO 0076683 A1 20001221
DOCDB simple family (application)
US 97944802 A 20020227; AT 00943718 T 20000516; DE 19926330 A 19990609; DE 50001106 T 20000516; EP 0004361 W 20000516; EP 00943718 A 20000516; ES 00943718 T 20000516