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(11)

EP 3 592 913 A1

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(43) Date of publication: 15.01.2020 Bulletin 2020/03 (21) Application number: 18763958.8 (22) Date of filing: 01.03.2018

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) E04F 13/12(2006.01) E04B 2/76(2006.01) (86) International application number: PCT/SE2018/000006 (87) International publication number: WO 2018/164619 (13.09.2018 Gazette 2018/37)

(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: 06.03.2017 SE 1730057 (71) Applicant: Slättberg, Fredrik Owe Anders 421 65 Västra Frölunda (SE)	(72) Inventor: Slättberg, Fredrik Owe Anders 421 65 Västra Frölunda (SE) (74) Representative: Danubia Patent & Law Office LLC  Bajcsy-Zsilinszky út 16 1051 Budapest 1051 Budapest (HU)