(19)

(11)

EP 4 111 011 A1

(12)

(43) Date of publication: 04.01.2023 Bulletin 2023/01 (21) Application number: 21720690.3 (22) Date of filing: 24.02.2021

(51) International Patent Classification (IPC):  E04F 13/073(2006.01) E04F 13/12(2006.01) E04F 13/08(2006.01) (52) Cooperative Patent Classification (CPC): E04F 13/12; E04F 13/0835; E04F 13/0851; E04F 13/0858; E04F 13/0812; E04F 13/083 (86) International application number: PCT/DK2021/050052 (87) International publication number: WO 2021/170192 (02.09.2021 Gazette 2021/35)

(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: 24.02.2020 DK PA202070118 (71) Applicant: Ronnau Development ApS 8270 Hojbjerg (DK)	(72) Inventor: RØNNAU, Per 8270 Højbjerg (DK) (74) Representative: Patrade A/S  Ceresbyen 75 8000 Aarhus C 8000 Aarhus C (DK)