(19)

(11)

EP 4 107 348 A1

(12)

(43) Date of publication: 28.12.2022 Bulletin 2022/52 (21) Application number: 21707038.2 (22) Date of filing: 16.02.2021

(51) International Patent Classification (IPC):  E05B 1/00(2006.01) F25D 23/02(2006.01) (52) Cooperative Patent Classification (CPC): E05B 1/0015; F25D 23/028 (86) International application number: PCT/NL2021/050101 (87) International publication number: WO 2021/167451 (26.08.2021 Gazette 2021/34)

(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: 18.02.2020 NL 2024932 (71) Applicant: Estem B.V. 3846 BN Harderwijk (NL)	(72) Inventor: BOUWMAN, Gerrit 3846 BN Harderwijk (NL) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)