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(11)

EP 4 739 909 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24742821.2 (22) Date of filing: 04.07.2024

(51) International Patent Classification (IPC):  F03D 13/20(2016.01) E04H 12/00(2006.01) (52) Cooperative Patent Classification (CPC): F03D 13/205; F05B 2260/301; F05B 2230/80; E04H 12/342; E04H 12/085; Y02E 10/72; Y02E 10/728 (86) International application number: PCT/DK2024/050165 (87) International publication number: WO 2025/011719 (16.01.2025 Gazette 2025/03)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 07.07.2023 DK PA202370368 (71) Applicant: VESTAS WIND SYSTEMS A/S 8200 Aarhus N (DK)	(72) Inventors: FYNBO, Peter 8200 Aarhus N (DK) HØEG, Christian Elkjær 8200 Aarhus N (DK) MADSEN, Søren Bøgelund 8200 Aarhus N (DK) (74) Representative: Vestas Patents Department  Hedeager 42 8200 Aarhus N 8200 Aarhus N (DK)