(19)

(11)

EP 3 899 282 A1

(12)

(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19818191.9 (22) Date of filing: 18.12.2019

(51) International Patent Classification (IPC):  F04C 14/22(2006.01) (52) Cooperative Patent Classification (CPC): F04C 28/22; F04C 14/226; F04C 2/3441 (86) International application number: PCT/EP2019/085961 (87) International publication number: WO 2020/127491 (25.06.2020 Gazette 2020/26)

(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 (30) Priority: 20.12.2018 IT 201800020377 (71) Applicant: Vhit S.P.A. Societa Unipersonale 26010 Offanengo (IT)	(72) Inventors: GALLI, Giancarlo 26010 Offanengo (IT) CROSIO, Pietro Francesco 27049 Stradella (IT) (74) Representative: Bee, Joachim  Robert Bosch GmbH C/IPE Wernerstrasse 51 70469 Stuttgart 70469 Stuttgart (DE)