EP 1177843 A3 20030611 - Tube formation method and apparatus
Title (en)
Tube formation method and apparatus
Title (de)
Verfahren und Vorrichtung zum Formen von Rohren
Title (fr)
Procédé et dispositif de formation de tubes
Publication
Application
Priority
US 63142600 A 20000803
Abstract (en)
[origin: EP1177843A2] Methods and apparatus for forming products having at least one first section 102 having a first wall configuration and at least one second section 104 having a second wall configuration, the second wall configuration different from the first wall configuration. A variation in wall configuration along the axis of the tubular product 100 may be designed to be axially asymmetrical at any segment of the axis 101. <IMAGE>
IPC 1-7
IPC 8 full level
B21C 1/00 (2006.01); B21C 1/24 (2006.01); B21C 37/16 (2006.01)
CPC (source: EP)
B21C 1/006 (2013.01); B21C 1/24 (2013.01); B21C 37/16 (2013.01); B21K 1/26 (2013.01)
Citation (search report)
- [X] US 2240456 A 19410429 - DARNER FREDERIC M
- [X] US 2258242 A 19411007 - MARONEY DITZEL OSCAR, et al
- [X] DE 3133804 C1 19830505 - MANNESMANN AG
- [X] GB 2298604 A 19960911 - DESIGN & DEV ENG LTD [GB]
- [X] US 4161112 A 19790717 - STUMP PAUL E [US]
- [X] US 4616500 A 19861014 - ALEXOFF RANDALL L [US]
- [X] US 4726211 A 19880223 - SUNAGA YUTAKA [JP], et al
- [A] US 3657910 A 19720425 - ISOBE KENJIRO, et al
- [A] US 3828596 A 19740813 - USUI G, et al
- [A] US 3550417 A 19701229 - MCMASTER ROBERT C
- [A] DE 843834 C 19520714 - DEUTSCHE EDELSTAHLWERKE AG
- [A] US 4175416 A 19791127 - ARAI AKIRA [JP], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1177843 A2 20020206; EP 1177843 A3 20030611; AU 7820001 A 20020218; CA 2342672 A1 20020203; WO 0211917 A1 20020214
DOCDB simple family (application)
EP 01300452 A 20010119; AU 7820001 A 20010803; CA 2342672 A 20010402; US 0141553 W 20010803