(19)

(11)

EP 2 571 638 A1

(12)

(43) Date of publication: 27.03.2013 Bulletin 2013/13 (21) Application number: 11719284.9 (22) Date of filing: 16.05.2011

(51) International Patent Classification (IPC):  B21F 23/00(2006.01) (86) International application number: PCT/EP2011/057866 (87) International publication number: WO 2011/144562 (24.11.2011 Gazette 2011/47)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (30) Priority: 17.05.2010 SE 1050480 (71) Applicant: Forsberg, Bengt 330 12 Forsheda (SE)	(72) Inventor: Forsberg, Bengt 330 12 Forsheda (SE) (74) Representative: Olofsson, Jonas Tor  Zacco Sweden AB P.O. Box 142 401 22 Göteborg 401 22 Göteborg (SE)