(19)

(11)

EP 3 673 331 A1

(12)

(43) Date of publication: 01.07.2020 Bulletin 2020/27 (21) Application number: 18848273.1 (22) Date of filing: 23.08.2018

(51) International Patent Classification (IPC):  G03B 37/04(2006.01) G08C 17/02(2006.01) G03B 21/00(2006.01) (86) International application number: PCT/FI2018/050598 (87) International publication number: WO 2019/038478 (28.02.2019 Gazette 2019/09)

(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: KH MA MD TN (30) Priority: 23.08.2017 FI 20175749 (71) Applicant: Collaprime Oy 13100 Hämeenlinna (FI)	(72) Inventors: NIVALA, Timo 13100 Hämeenlinna (FI) LINDQVIST, Tony 13100 Hämeenlinna (FI) (74) Representative: Laine IP Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)