(19)

(11)

EP 4 285 027 A1

(12)

(43) Date of publication: 06.12.2023 Bulletin 2023/49 (21) Application number: 21702941.2 (22) Date of filing: 29.01.2021

(51) International Patent Classification (IPC):  F04C 2/336(2006.01) F04C 2/44(2006.01) F04C 14/10(2006.01) F04C 15/00(2006.01) F04C 2/40(2006.01) F04C 2/46(2006.01) F04C 14/26(2006.01) (52) Cooperative Patent Classification (CPC): F04C 2/336; F04C 2/40; F04C 2/44; F04C 2/46; F04C 14/10; F04C 14/26; F04C 15/0049; F04C 2270/13; F04C 2270/14 (86) International application number: PCT/EP2021/052128 (87) International publication number: WO 2022/161617 (04.08.2022 Gazette 2022/31)

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