(19)

(11)

EP 4 405 536 A2

(12)

(43) Date of publication: 31.07.2024 Bulletin 2024/31 (21) Application number: 22869482.4 (22) Date of filing: 19.09.2022

(51) International Patent Classification (IPC):  E04F 13/00(2006.01) (52) Cooperative Patent Classification (CPC): E04C 2/40; E04F 13/0862; E04F 13/147 (86) International application number: PCT/FI2022/050622 (87) International publication number: WO 2023/041847 (23.03.2023 Gazette 2023/12)

(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: 20.09.2021 FI 20215985 (71) Applicant: FABRICK SK, s.r.o. 93201 Velký Meder (SK)	(72) Inventors: LASANEN, Jarkko 90620 Oulu (FI) JOKELA, Jouni 90620 Oulu (FI) (74) Representative: Primrose Oy  Unioninkatu 24 00130 Helsinki 00130 Helsinki (FI)