(19)

(11)

EP 4 237 634 A1

(12)

(43) Date of publication: 06.09.2023 Bulletin 2023/36 (21) Application number: 21801540.2 (22) Date of filing: 28.10.2021

(51) International Patent Classification (IPC):  E04B 1/26(2006.01) (52) Cooperative Patent Classification (CPC): E04B 1/2604; E04B 2001/2664; E04B 2001/2648 (86) International application number: PCT/EP2021/079978 (87) International publication number: WO 2022/090391 (05.05.2022 Gazette 2022/18)

(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: 29.10.2020 BE 202005763 (71) Applicant: Bewerk BV 3545 Halen (BE)	(72) Inventor: RUTTEN, Bartel 3590 Diepenbeek (BE) (74) Representative: Arnold & Siedsma  Bezuidenhoutseweg 57 2594 AC The Hague 2594 AC The Hague (NL)