(19)

(11)

EP 4 364 174 A1

(12)

(43) Date of publication: 08.05.2024 Bulletin 2024/19 (21) Application number: 22833732.5 (22) Date of filing: 09.06.2022

(51) International Patent Classification (IPC):  H01F 41/07(2016.01) H02K 3/14(2006.01) H01B 5/08(2006.01) (52) Cooperative Patent Classification (CPC): H02K 3/14; H02K 2203/15 (86) International application number: PCT/NO2022/050131 (87) International publication number: WO 2023/277694 (05.01.2023 Gazette 2023/01)

(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: 29.06.2021 NO 20210835 (71) Applicant: Alva Industries AS 7038 Trondheim (NO)	(72) Inventor: ZHANG, Zhaoqiang 7037 Trondheim (NO) (74) Representative: Curo AS  Vestre Rosten 81 7075 Tiller 7075 Tiller (NO)