(19)

(11)

EP 2 406 572 A2

(12)

(88) Date of publication A3: 02.12.2010 (43) Date of publication: 18.01.2012 Bulletin 2012/03 (21) Application number: 10716371.9 (22) Date of filing: 12.03.2010

(51) International Patent Classification (IPC):  F28D 9/00(2006.01) F28F 13/00(2006.01) (86) International application number: PCT/FI2010/050191 (87) International publication number: WO 2010/103190 (16.09.2010 Gazette 2010/37)

(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 SM TR (30) Priority: 13.03.2009 FI 20095267 (71) Applicant: Kontu, Mauri 23660 Kalanti As. (FI)	(72) Inventor: Kontu, Mauri 23660 Kalanti As. (FI) (74) Representative: Maskula, Silla Marjatta  Turun Patenttitoimisto Oy, P.O. Box 99 20521 Turku 20521 Turku (FI)