(19)

(11)

EP 3 902 969 A1

(12)

(43) Date of publication: 03.11.2021 Bulletin 2021/44 (21) Application number: 19827847.5 (22) Date of filing: 17.12.2019

(51) International Patent Classification (IPC):  E06B 9/322(2006.01) E06B 9/78(2006.01) E06B 9/90(2006.01) E06B 9/68(2006.01) E06B 9/80(2006.01) (52) Cooperative Patent Classification (CPC): E06B 2009/905; E06B 9/80; E06B 9/90; E06B 2009/807; E06B 2009/725; E06B 2009/785; E06B 9/68; E06B 9/78; E06B 9/322 (86) International application number: PCT/NL2019/050843 (87) International publication number: WO 2020/139082 (02.07.2020 Gazette 2020/27)

(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: 24.12.2018 NL 2022305 (71) Applicant: Vako B.V. 5234 GA 's-Hertogenbosch (NL)	(72) Inventor: VALKENBURG, Nanne Willem 5263 LT Vught (NL) (74) Representative: Patentwerk B.V.  P.O. Box 1514 5200 BN 's-Hertogenbosch 5200 BN 's-Hertogenbosch (NL)