(19)

(11)

EP 1 824 623 A1

(12)

(43) Date of publication: 29.08.2007 Bulletin 2007/35 (21) Application number: 05804660.8 (22) Date of filing: 25.11.2005

(51) International Patent Classification (IPC):  B21D 53/08(2006.01) B23K 26/24(2006.01) F24J 2/26(2006.01) (86) International application number: PCT/SE2005/001775 (87) International publication number: WO 2006/065195 (22.06.2006 Gazette 2006/25)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 13.12.2004 SE 0403031 (71) Applicant: Sunstrip AB 612 44 Finspång (SE)	(72) Inventor: HULTMARK, Göran S-426 76 Västra Frölunda (SE) (74) Representative: Valea AB  Lindholmspiren 5 417 56 Göteborg 417 56 Göteborg (SE)