(19)

(11)

EP 3 423 163 A1

(12)

(43) Date of publication: 09.01.2019 Bulletin 2019/02 (21) Application number: 17759325.8 (22) Date of filing: 28.02.2017

(51) International Patent Classification (IPC):  A62C 2/10(2006.01) E06B 9/58(2006.01) E06B 9/17(2006.01) A62C 3/07(2006.01) A62C 3/02(2006.01) (86) International application number: PCT/FI2017/050131 (87) International publication number: WO 2017/149201 (08.09.2017 Gazette 2017/36)

(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 Designated Validation States: MA MD (30) Priority: 29.02.2016 FI 20165154 (71) Applicant: Polarteknik Oy 32700 Huittinen (FI)	(72) Inventor: KANKKUNEN, Jussi 32700 Huittinen (FI) (74) Representative: Kolster Oy Ab  (Salmisaarenaukio 1) P.O. Box 204 00181 Helsinki 00181 Helsinki (FI)