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(11)

EP 4 536 969 A1

(12)

(43) Date of publication: 16.04.2025 Bulletin 2025/16 (21) Application number: 22732237.7 (22) Date of filing: 09.06.2022

(51) International Patent Classification (IPC):  F04C 2/10(2006.01) F04D 13/06(2006.01) F04D 29/62(2006.01) F04C 15/00(2006.01) F04D 29/58(2006.01) (52) Cooperative Patent Classification (CPC): F04C 2/102; F04C 15/0096; F04C 2240/808; F04D 13/0606; F04D 29/5813; F04D 29/5893; F04D 29/628 (86) International application number: PCT/EP2022/065739 (87) International publication number: WO 2023/237203 (14.12.2023 Gazette 2023/50)

(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 (71) Applicant: Pierburg Pump Technology GmbH 41460 Neuss (DE)	(72) Inventors: WEGENER, Robin 41460 Neuss (DE) SIMONETTI, Gianluca 41460 Neuss (DE) (74) Representative: terpatent PartGmbB  Burgunderstraße 29 40549 Düsseldorf 40549 Düsseldorf (DE)