(19)

(11)

EP 4 153 909 A1

(12)

(43) Date of publication: 29.03.2023 Bulletin 2023/13 (21) Application number: 21808479.6 (22) Date of filing: 20.05.2021

(51) International Patent Classification (IPC):  F21V 35/00(2006.01) B21D 53/36(2006.01) (52) Cooperative Patent Classification (CPC): F21V 35/00; F21V 35/003; F21V 21/0824 (86) International application number: PCT/DK2021/050157 (87) International publication number: WO 2021/233509 (25.11.2021 Gazette 2021/47)

(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: 20.05.2020 DK BA202000040 U (71) Applicant: Befi ApS 8410 Rønde (DK)	(72) Inventors: HJORTH, Finn 8560 Kolind (DK) HJORTH, Betina 8560 Kolind (DK) (74) Representative: Patrade A/S  Ceresbyen 75 8000 Aarhus C 8000 Aarhus C (DK)