(19)

(11)

EP 2 586 215 A1

(12)

(43) Date of publication: 01.05.2013 Bulletin 2013/18 (21) Application number: 11800244.3 (22) Date of filing: 22.06.2011

(51) International Patent Classification (IPC):  H04R 1/02(2006.01) B28D 1/30(2006.01) (86) International application number: PCT/FI2011/050605 (87) International publication number: WO 2012/001235 (05.01.2012 Gazette 2012/01)

(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: 28.06.2010 FI 20105739 (71) Applicant: Vuoluset KY 83700 Polvijärvi (FI)	(72) Inventor: MYLLYOJA, Keijo FI-83700 Polvijärvi (FI) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)