(19)

(11)

EP 2 556 302 A1

(12)

(43) Date of publication: 13.02.2013 Bulletin 2013/07 (21) Application number: 11765134.9 (22) Date of filing: 05.04.2011

(51) International Patent Classification (IPC):  F23J 13/02(2006.01) E04H 12/28(2006.01) F23J 13/06(2006.01) (86) International application number: PCT/FI2011/050289 (87) International publication number: WO 2011/124756 (13.10.2011 Gazette 2011/41)

(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: 30.04.2010 FI 20105475 07.04.2010 FI 20105354 (71) Applicant: R Hautala Ky 62310 Voltti (FI)	(72) Inventor: HAUTALA, Reijo FI-62310 Voltti (FI) (74) Representative: Niemi, Hakan Henrik  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)