(19)

(11)

EP 4 107 324 A1

(12)

(43) Date of publication: 28.12.2022 Bulletin 2022/52 (21) Application number: 21708715.4 (22) Date of filing: 19.02.2021

(51) International Patent Classification (IPC):  D06F 34/18(2020.01) D06F 31/00(2006.01) D06F 95/00(2006.01) (52) Cooperative Patent Classification (CPC): D06F 34/18; D06F 33/30; D06F 31/00; D06F 95/00 (86) International application number: PCT/FI2021/050122 (87) International publication number: WO 2021/165582 (26.08.2021 Gazette 2021/34)

(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: 21.02.2020 FI 20205179 (71) Applicant: 24 Pesula Oy 67100 Kokkola (FI)	(72) Inventors: NEVALA, Jukka 67100 Kokkola (FI) NEVALA, Veli-Pekka 67100 Kokkola (FI) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)