(19)

(11)

EP 4 100 588 A1

(12)

(43) Date of publication: 14.12.2022 Bulletin 2022/50 (21) Application number: 21702522.0 (22) Date of filing: 05.02.2021

(51) International Patent Classification (IPC):  E04B 9/00(2006.01) E04B 9/30(2006.01) E04B 1/76(2006.01) E04B 9/04(2006.01) E04H 15/64(2006.01) (52) Cooperative Patent Classification (CPC): E04B 9/0485; E04B 2009/0492; E04B 1/7662; E04B 9/001; E04B 9/303 (86) International application number: PCT/EP2021/052833 (87) International publication number: WO 2021/156452 (12.08.2021 Gazette 2021/32)

(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: 06.02.2020 EP 20155915 (71) Applicant: SPANTECH INTERNATIONAL 1030 Schaerbeek (BE)	(72) Inventor: DE VILLENFAGNE, Derek 1180 Bruxelles (BE) (74) Representative: Gevers Patents  Intellectual Property House Holidaystraat 5 1831 Diegem 1831 Diegem (BE)