(19)

(11)

EP 1 737 591 A2

(12)

(88) Date of publication A3: 20.04.2006 (43) Date of publication: 03.01.2007 Bulletin 2007/01 (21) Application number: 05735510.9 (22) Date of filing: 13.04.2005

(51) International Patent Classification (IPC):  B21D 53/28(2006.01) (86) International application number: PCT/US2005/012713 (87) International publication number: WO 2005/104692 (10.11.2005 Gazette 2005/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 16.04.2004 EP 04405237 (71) Applicant: QUADRANT EPP AG 5600 Lenzburg (CH)	(72) Inventors: MEIJER, Jawk NL-7641 DG Wierden (NL) OLIVETO, Michael, D. Robesonia, PA 19551 (US) ZINNIKUS, Jurgen 74912 Kirchardt (DE) (74) Representative: Schmauder, Klaus Dieter et al Schmauder & Partner AG Patentanwälte Zwängiweg 7 8038 Zürich 8038 Zürich (CH)