(19)

(11)

EP 4 200 478 A1

(12)

(43) Date of publication: 28.06.2023 Bulletin 2023/26 (21) Application number: 21754996.3 (22) Date of filing: 19.08.2021

(51) International Patent Classification (IPC):  E02D 9/02(2006.01) (52) Cooperative Patent Classification (CPC): E02D 9/02; E02B 2017/0052; E02B 2017/0065; E02B 17/0013 (86) International application number: PCT/EP2021/073006 (87) International publication number: WO 2022/038219 (24.02.2022 Gazette 2022/08)

(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: 21.08.2020 EP 20192153 (71) Applicant: Treehouse Denmark ApS 8800 Viborg (DK)	(72) Inventor: THOMSEN, Kurt Elith 8800 Viborg (DK) (74) Representative: Plougmann Vingtoft a/s  Strandvejen 70 2900 Hellerup 2900 Hellerup (DK)