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EP 4 240 973 A1

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(43) Date of publication: 13.09.2023 Bulletin 2023/37 (21) Application number: 20803829.9 (22) Date of filing: 09.11.2020

(51) International Patent Classification (IPC):  F04C 2/344(2006.01) F04C 15/00(2006.01) F04C 14/22(2006.01) F01C 21/10(2006.01) (52) Cooperative Patent Classification (CPC): F04C 2/3442; F04C 14/223; F04C 15/0042; F01C 21/108 (86) International application number: PCT/EP2020/081508 (87) International publication number: WO 2022/096134 (12.05.2022 Gazette 2022/19)

(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: BETTI, Federico 57123 Livorno (IT) LAZZERINI, Massimiliano 57123 Livorno (IT) CUNEO, Carmine 57123 Livorno (IT) (74) Representative: terpatent Patentanwälte ter Smitten Eberlein-Van Hoof Rütten Daubert  Partnerschaftsgesellschaft mbB Burgunderstraße 29 40549 Düsseldorf 40549 Düsseldorf (DE)