(19)

(11)

EP 4 065 835 A1

(12)

(43) Date of publication: 05.10.2022 Bulletin 2022/40 (21) Application number: 20819623.8 (22) Date of filing: 27.11.2020

(51) International Patent Classification (IPC):  F03D 1/06(2006.01) (52) Cooperative Patent Classification (CPC): F03D 1/0675; F03D 1/0683; F05B 2240/302; F05B 2260/30; Y02E 10/72 (86) International application number: PCT/DK2020/050338 (87) International publication number: WO 2021/104600 (03.06.2021 Gazette 2021/22)

(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: 29.11.2019 DK PA201970738 (71) Applicant: VESTAS WIND SYSTEMS A/S 8200 Aarhus N (DK)	(72) Inventor: BECH, Anton 13005 Ciudad Real (ES) (74) Representative: Vestas Patents Department  Hedeager 42 8200 Aarhus N 8200 Aarhus N (DK)