(19)

(11)

EP 2 912 234 A1

(12)

(43) Date of publication: 02.09.2015 Bulletin 2015/36 (21) Application number: 13839566.0 (22) Date of filing: 23.09.2013

(51) International Patent Classification (IPC):  E03C 1/28(2006.01) E03C 1/29(2006.01) E03F 5/04(2006.01) (86) International application number: PCT/FI2013/050917 (87) International publication number: WO 2014/044919 (27.03.2014 Gazette 2014/13)

(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 Designated Extension States: BA ME (30) Priority: 24.09.2012 FI 20125985 (71) Applicant: Serres Oy 61850 Kauhajoki (FI)	(72) Inventor: RAJAMÄKI, Veikko FI-61850 Kauhajoki As. (FI) (74) Representative: Kolster Oy Ab  Iso Roobertinkatu 23 PO Box 148 00121 Helsinki 00121 Helsinki (FI)