(19)

(11)

EP 2 185 773 A1

(12)

(43) Date of publication: 19.05.2010 Bulletin 2010/20 (21) Application number: 08787764.3 (22) Date of filing: 04.09.2008

(51) International Patent Classification (IPC):  E04C 1/39(2006.01) F24D 3/14(2006.01) (86) International application number: PCT/FI2008/050491 (87) International publication number: WO 2009/030817 (12.03.2009 Gazette 2009/11)

(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 MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 07.09.2007 FI 20075616 (71) Applicant: YIT Kiinteistötekniikka Oy 00620 Helsinki (FI)	(72) Inventor: MYYRYLÄINEN, Mikko FI-00980 Helsinki (FI) (74) Representative: Holmström, Stefan Mikael  Kolster Oy Ab Iso Roobertinkatu 23 P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)