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(11)

EP 4 493 770 A1

(12)

(43) Date of publication: 22.01.2025 Bulletin 2025/04 (21) Application number: 22714829.3 (22) Date of filing: 15.03.2022

(51) International Patent Classification (IPC):  E04B 1/21(2006.01) E04C 5/16(2006.01) (52) Cooperative Patent Classification (CPC): E04B 1/215; E04C 5/165; E04C 5/163 (86) International application number: PCT/EP2022/056608 (87) International publication number: WO 2023/174514 (21.09.2023 Gazette 2023/38)

(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 (71) Applicant: Leviat GmbH 40764 Langenfeld (DE)	(72) Inventors: DAHER, Sayed Selangor (MY) CHONG, Ming Keat Selangor (MY) DEVADAS, Alvin 52200 Kuala Lumpur (MY) (74) Representative: Zurhorst, Stefan et al Patentanwälte Dipl.Ing. W. Jackisch & Partner mbB Menzelstraße 40 70192 Stuttgart 70192 Stuttgart (DE)