(19)

(11)

EP 1 809 944 A1

(12)

(43) Date of publication: 25.07.2007 Bulletin 2007/30 (21) Application number: 04791425.4 (22) Date of filing: 27.10.2004

(51) International Patent Classification (IPC):  F23B 10/00(2006.01) (86) International application number: PCT/FI2004/000633 (87) International publication number: WO 2006/045876 (04.05.2006 Gazette 2006/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: LT LV (71) Applicant: Kurvinen, Teuvo 06100 Porvoo (FI)	(72) Inventor: Kurvinen, Teuvo 06100 Porvoo (FI) (74) Representative: Träskman, Berndt Hilding  P.O. Box 16 00101 Helsinki 00101 Helsinki (FI)