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(11)

EP 1 689 540 A1

(12)

(43) Date of publication: 16.08.2006 Bulletin 2006/33 (21) Application number: 04797267.4 (22) Date of filing: 25.11.2004

(51) International Patent Classification (IPC):  B21D 43/05(2006.01) B30B 15/00(2006.01) B21D 43/10(2006.01) (86) International application number: PCT/CH2004/000710 (87) International publication number: WO 2005/051563 (09.06.2005 Gazette 2005/23)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 25.11.2003 WO PCT/CH03/00780 (71) Applicant: GÜDEL GROUP AG 4900 Langenthal (CH)	(72) Inventors: HEID, Rudolf CH-4542 Luterbach (CH) KURT, Hans-Ulrich CH-4566 Kriegstetten (CH) LEHMANN, Ulrich 4900 Langenthal (CH) (74) Representative: Rüfenacht, Philipp Michael  Keller & Partner Patentanwälte AG Schmiedenplatz 5 Postfach 3000 Bern 7 3000 Bern 7 (CH)