(19)

(11)

EP 2 416 904 A1

(12)

(43) Date of publication: 15.02.2012 Bulletin 2012/07 (21) Application number: 10761928.0 (22) Date of filing: 23.03.2010

(51) International Patent Classification (IPC):  B21D 28/10(2006.01) B21D 37/08(2006.01) B21D 35/00(2006.01) (86) International application number: PCT/SE2010/000067 (87) International publication number: WO 2010/117317 (14.10.2010 Gazette 2010/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 06.04.2009 SE 0900462 (71) Applicant: Gestamp HardTech AB 971 25 Luleå (SE)	(72) Inventor: NILSSON, Anders S-977 53 Luleå (SE) (74) Representative: Körber, Martin Hans  Mitscherlich & Partner Patent- und Rechtsanwälte Sonnenstraße 33 80331 München 80331 München (DE)