(19)

(11)

EP 4 051 849 A1

(12)

(43) Date of publication: 07.09.2022 Bulletin 2022/36 (21) Application number: 19809371.8 (22) Date of filing: 31.10.2019

(51) International Patent Classification (IPC):  E04F 15/02(2006.01) (52) Cooperative Patent Classification (CPC): E04F 15/02044; E04F 2015/02061 (86) International application number: PCT/EP2019/079795 (87) International publication number: WO 2021/083520 (06.05.2021 Gazette 2021/18)

(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 (71) Applicant: GRANAB Förvaltning AB 447 24 Vårgårda (SE)	(72) Inventors: BLOM, Fredrik 441 33 ALINGSÅS (SE) BLOM, Kent 447 32 VÅRGÅRDA (SE) (74) Representative: AWA Sweden AB  P.O. Box 11394 404 28 Göteborg 404 28 Göteborg (SE)