(19)

(11)

EP 4 771 277 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24768694.2 (22) Date of filing: 13.08.2024

(51) International Patent Classification (IPC):  F04B 49/06(2006.01) F04B 49/20(2006.01) F04C 28/06(2006.01) F04B 49/08(2006.01) F04C 18/16(2006.01) F04C 28/08(2006.01) (52) Cooperative Patent Classification (CPC): F04B 49/06; F04B 49/08; F04B 49/20; F04B 2203/0209; F04B 2205/05; F04C 28/08; F04C 28/06; F04C 18/16; F04B 35/04 (86) International application number: PCT/IB2024/057849 (87) International publication number: WO 2025/046361 (06.03.2025 Gazette 2025/10)

(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: 28.08.2023 US 202363579183 P (71) Applicant: Atlas Copco Airpower, Naamloze Vennootschap 2610 Wilrijk (BE)	(72) Inventors: AERTS, Joris 2610 Wilrijk (BE) VAN ACKER, Maarten 2610 Wilrijk (BE) (74) Representative: Atlas Copco Airpower IP department  Airtec Division P.O. Box 101 Boomsesteenweeg 957 2610 Wilrijk 2610 Wilrijk (BE)