EP 0780173 A3 19981021 - Method of manufacturing a pipe section, particularly a branch pipe manifold and branch pipe manifold produced thereby
Title (en)
Method of manufacturing a pipe section, particularly a branch pipe manifold and branch pipe manifold produced thereby
Title (de)
Verfahren zur Herstellung einen Rohrteiles, insbesondere einer Krümmer-Rohrabzweigung einer Kraftfahrzeug-Abgasanlage, sowie eine hiernach gefertigte Krümmer-Rohrabzweigung
Title (fr)
Procédé de fabrication d'une section de tuyau, notamment d'un embranchement de convertisseur et embranchement de convertisseur ainsi fabriqué
Publication
Application
Priority
DE 19548224 A 19951222
Abstract (en)
[origin: EP0780173A2] The branch has a ready-bent roll part with two short edges in its central contact area (7), which are welded via a seam on its face. It can also have a short and a long edge which are welded laterally to one another via a throat seam. The roll part in its central contact area inter-engages box-fashion and is welded by means of a throat seam. The intermediate area between a straight pipe section (2) and a lateral pipe branch (3) tightly engages and has a closed contour provided with a welding seam. The roll part is double-walled.
IPC 1-7
IPC 8 full level
B21C 37/08 (2006.01); B21C 37/29 (2006.01); B21D 53/88 (2006.01); F01N 13/18 (2010.01)
CPC (source: EP)
B21C 37/0803 (2013.01); B21C 37/29 (2013.01); B21D 53/88 (2013.01); F01N 13/18 (2013.01); F01N 2450/22 (2013.01)
Citation (search report)
- [X] FR 1327091 A 19630517 - NEYRPIC ATELIERS NEYRET BEYLIE
- [X] BE 373874 A
- [A] DE 4113855 A1 19920820 - BAYERISCHE MOTOREN WERKE AG [DE]
- [A] US 1830262 A 19311103 - CARLSON HJALMAR G
- [A] FR 761992 A 19340331 - CIE NAT RADIATEURS
- [A] US 2713195 A 19550719 - HEMMER ANTON V
- [A] EP 0321869 A1 19890628 - NISSAN MOTOR [JP]
- [A] PATENT ABSTRACTS OF JAPAN vol. 002, no. 152 (C - 031) 20 December 1978 (1978-12-20)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0780173 A2 19970625; EP 0780173 A3 19981021; DE 19548224 A1 19970626
DOCDB simple family (application)
EP 96119402 A 19961204; DE 19548224 A 19951222