(19)

(11)

EP 1 641 574 A1

(12)

(43) Date of publication: 05.04.2006 Bulletin 2006/14 (21) Application number: 04739996.9 (22) Date of filing: 16.06.2004

(51) International Patent Classification (IPC):  B21C 37/06(1968.09) B21C 37/15(1968.09) F16L 9/16(1968.09) B21C 37/09(1968.09) B23K 35/30(1968.09) (86) International application number: PCT/EP2004/006537 (87) International publication number: WO 2004/112979 (29.12.2004 Gazette 2004/53)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 18.06.2003 EP 03076903 25.06.2003 US 482028 P (71) Applicant: Hille & Müller GmbH 40589 Düsseldorf (DE)	(72) Inventors: JUNKERS, Dieter, Otto, Paul 54298 Aach (DE) BOEHMER, Peter, Arthur 54313 Zemmer (DE) (74) Representative: Kruit, Jan et al Corus Technology BV PO Box 10000 1970 CA IJmuiden 1970 CA IJmuiden (NL)