(19)

(11)

EP 4 248 161 A1

(12)

(43) Date of publication: 27.09.2023 Bulletin 2023/39 (21) Application number: 21814933.4 (22) Date of filing: 19.11.2021

(51) International Patent Classification (IPC):  F28D 9/00(2006.01) F28D 21/00(2006.01) (52) Cooperative Patent Classification (CPC): F28D 21/0001; F28D 9/0025; F28D 9/0037; F28F 2275/14 (86) International application number: PCT/NL2021/050712 (87) International publication number: WO 2022/108450 (27.05.2022 Gazette 2022/21)

(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: 20.11.2020 NL 2026943 (71) Applicant: Level Holding II B.V. 5633 AA Eindhoven (NL)	(72) Inventor: HOOGENDOORN, Peter 5633 AA Eindhoven (NL) (74) Representative: Patentwerk B.V.  P.O. Box 1514 5200 BN 's-Hertogenbosch 5200 BN 's-Hertogenbosch (NL)