(19)

(11)

EP 4 228 475 A1

(12)

(43) Date of publication: 23.08.2023 Bulletin 2023/34 (21) Application number: 21794253.1 (22) Date of filing: 14.10.2021

(51) International Patent Classification (IPC):  A47B 9/20(2006.01) A47B 9/06(2006.01) F16B 7/10(2006.01) (52) Cooperative Patent Classification (CPC): A47B 9/20; A47B 2009/065; A47B 2200/0054; A47B 2200/0058; A47B 2200/0059 (86) International application number: PCT/NL2021/050622 (87) International publication number: WO 2022/081010 (21.04.2022 Gazette 2022/16)

(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: 15.10.2020 NL 2026688 (71) Applicants: Ampo Holding Ltd. Hong Kong 999077 (HK) De Weerd, Johan 1016 HK Amsterdam (NL)	(72) Inventor: STOELINGA, Dirk Jan 3764 CP Soest (NL) (74) Representative: Plaggenborg, Menko Bernard  Octrooibureau Novopatent Transistorstraat 31, Office 02-18 1322 CK Almere 1322 CK Almere (NL)