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(11)

EP 4 326 984 A1

(12)

(43) Date of publication: 28.02.2024 Bulletin 2024/09 (21) Application number: 22792100.4 (22) Date of filing: 08.03.2022

(51) International Patent Classification (IPC):  F03D 13/20(2016.01) E04B 2/60(2006.01) E04H 12/08(2006.01) B23K 26/21(2014.01) B23K 15/00(2006.01) (52) Cooperative Patent Classification (CPC): B23K 26/21; B23K 26/26; E04H 12/08; E02D 27/425; E02D 27/52; F03D 13/20; F05B 2230/234; F05B 2250/131; F05B 2240/912 (86) International application number: PCT/SE2022/050222 (87) International publication number: WO 2022/225432 (27.10.2022 Gazette 2022/43)

(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: 23.04.2021 SE 2150517 (71) Applicant: Powertower AB 715 92 Stora Mellösa (SE)	(72) Inventor: JONSSON, Fredrik 434 36 Kungsbacka (SE) (74) Representative: Swea IP Law AB  Forskargatan 20G 151 36 Södertälje 151 36 Södertälje (SE)