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EP 4 816 703 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 23817792.7 (22) Date of filing: 28.11.2023

(51) International Patent Classification (IPC):  F16C 3/14(2006.01) F04B 53/00(2006.01) F16C 17/02(2006.01) F01L 1/047(2006.01) F01M 9/10(2006.01) F04B 53/18(2006.01) F16C 33/10(2006.01) (52) Cooperative Patent Classification (CPC): F01L 2001/0476; F01M 9/102; F16C 33/1045; F16C 33/1065; F16C 2240/42; F16C 2360/22; F16C 33/106; F16C 17/026; F16C 3/14; F16C 17/02 (86) International application number: PCT/FI2023/050652 (87) International publication number: WO 2025/114637 (05.06.2025 Gazette 2025/23)

(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: KH MA MD TN (71) Applicant: Wärtsilä Finland Oy 65170 Vaasa (FI)	(72) Inventors: ISTOLAHTI, Jaakko 65170 Vaasa (FI) RINTAMÄKI, Tommi 65170 Vaasa (FI) PERINEL, Luciano 65170 Vaasa (FI) HALLA-AHO, Pasi 65170 Vaasa (FI) LEPPÄKANGAS, Janne 65170 Vaasa (FI) VESALA, Jukka-Pekka 65170 Vaasa (FI) (74) Representative: Berggren Oy  P.O. Box 16 Fabianinkatu 21 00101 Helsinki 00101 Helsinki (FI)