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(11)

EP 4 121 612 A1

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(43) Date of publication: 25.01.2023 Bulletin 2023/04 (21) Application number: 21771265.2 (22) Date of filing: 16.03.2021

(51) International Patent Classification (IPC):  E04C 2/288(2006.01) E04B 2/90(2006.01) E04C 2/04(2006.01) (52) Cooperative Patent Classification (CPC): E04B 2/90; E04C 2/288; E04C 2/04; E04C 2/041; E04B 1/4178; E04B 1/7616; E04C 2/48 (86) International application number: PCT/AU2021/050234 (87) International publication number: WO 2021/184067 (23.09.2021 Gazette 2021/38)

(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 (30) Priority: 16.03.2020 AU 2020900804 23.09.2020 AU 2020903423 (71) Applicants: MTD Holdings NSW Pty Ltd AFT Zikoyen Investment Trust Homebush, New South Wale 2140 (AU) Stirling & Dunkirk Investments Pty Ltd ATF Bannockburn Investment Trust Homebush, New South Wales 2140 (AU)

(72) Inventors: ZARAFETAS, Constantine Michael Raffael Homebush, New South Wales 2140 (AU) ZARAFETAS, Neville Anthony Homebush, New South Wales 2140 (AU) MCCLELLAND, Neil Sydney, New South Wales 2000 (AU) (74) Representative: Kailuweit & Uhlemann Patentanwälte Partnerschaft mbB  Bamberger Straße 49 01187 Dresden 01187 Dresden (DE)