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(11)

EP 4 416 347 A1

(12)

(43) Date of publication: 21.08.2024 Bulletin 2024/34 (21) Application number: 22800283.8 (22) Date of filing: 14.10.2022

(51) International Patent Classification (IPC):  E04F 13/08(2006.01) E04F 13/14(2006.01) (52) Cooperative Patent Classification (CPC): E04F 13/0846; E04F 13/0898; E04F 13/142; E04F 2203/06 (86) International application number: PCT/EP2022/078665 (87) International publication number: WO 2023/062195 (20.04.2023 Gazette 2023/16)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 15.10.2021 NL 2029428 31.01.2022 NL 2030785 (71) Applicant: Kettlitz B.V. 2661 RW Bergschenhoek (NL)	(72) Inventor: KETTLITZ, Jozef Hendrik Theodoor Otto 2661 RW Bergschenhoek (NL) (74) Representative: EP&C  P.O. Box 3241 2280 GE Rijswijk 2280 GE Rijswijk (NL)