(19)

(11)

EP 2 010 341 A1

(12)

(43) Date of publication: 07.01.2009 Bulletin 2009/02 (21) Application number: 07730700.7 (22) Date of filing: 23.04.2007

(51) International Patent Classification (IPC):  B21D 28/20(2006.01) B21D 28/26(2006.01) B21D 28/04(2006.01) (86) International application number: PCT/FI2007/050213 (87) International publication number: WO 2007/122294 (01.11.2007 Gazette 2007/44)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 21.04.2006 FI 20065256 (71) Applicant: Akseli Lahtinen OY 50170 Mikkeli (FI)	(72) Inventor: LAHTINEN, Rauno 52510 Hietanen (FI) (74) Representative: Helke, Kimmo Kalervo et al Kespat Oy P.O. Box 601 40101 Jyväskylä 40101 Jyväskylä (FI)