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EP 4 505 072 A1

(12)

(43) Date of publication: 12.02.2025 Bulletin 2025/07 (21) Application number: 22720966.5 (22) Date of filing: 05.04.2022

(51) International Patent Classification (IPC):  F04C 2/10(2006.01) F04C 14/16(2006.01) F04C 14/28(2006.01) F04C 14/04(2006.01) F04C 14/26(2006.01) (52) Cooperative Patent Classification (CPC): F04C 2/102; F04C 14/04; F04C 14/16; F04C 14/26; F04C 14/28 (86) International application number: PCT/EP2022/058972 (87) International publication number: WO 2023/193887 (12.10.2023 Gazette 2023/41)

(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: VEZENTAN, Vlad-Dumitru 41460 Neuss (DE) HENDRIKS, Jan 41460 Neuss (DE) (74) Representative: terpatent PartGmbB  Burgunderstraße 29 40549 Düsseldorf 40549 Düsseldorf (DE)