(19)

(11)

EP 2 473 686 A1

(12)

(43) Date of publication: 11.07.2012 Bulletin 2012/28 (21) Application number: 10813386.9 (22) Date of filing: 15.07.2010

(51) International Patent Classification (IPC):  E04D 13/14(2006.01) E04D 13/147(2006.01) (86) International application number: PCT/FI2010/050596 (87) International publication number: WO 2011/027025 (10.03.2011 Gazette 2011/10)

(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 SE SI SK SM TR (30) Priority: 02.09.2009 FI 20090319 U 17.11.2009 FI 20090415 U (71) Applicant: SK Tuote Oy 65610 Mustasaari (FI)	(72) Inventor: SAIKKONEN, Eero FI-65370 Vaasa (FI) (74) Representative: Eriksson, Svante Johan Christer et al OY Jalo Ant-Wuorinen AB Iso Roobertinkatu 4-6 A 00120 Helsinki 00120 Helsinki (FI)