(19)

(11)

EP 2 389 273 A1

(12)

(43) Date of publication: 30.11.2011 Bulletin 2011/48 (21) Application number: 09838694.9 (22) Date of filing: 26.01.2009

(51) International Patent Classification (IPC):  B24B 1/04(2006.01) B21J 5/00(2006.01) B24B 39/00(2006.01) (86) International application number: PCT/FI2009/050064 (87) International publication number: WO 2010/084234 (29.07.2010 Gazette 2010/30)

(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 TR (71) Applicant: Elpro Oy 78850 Varkaus (FI)	(72) Inventor: ROUVINEN, Esa OUTOKUMPU 83500 (FI) (74) Representative: LEITZINGER OY  Tammasaarenkatu 1 00180 Helsinki 00180 Helsinki (FI)