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(11)

EP 3 759 348 A1

(12)

(43) Date of publication: 06.01.2021 Bulletin 2021/01 (21) Application number: 19711716.1 (22) Date of filing: 27.02.2019

(51) International Patent Classification (IPC):  F04B 17/04(2006.01) F04B 49/06(2006.01) F04B 13/00(2006.01) G01F 1/075(2006.01) (86) International application number: PCT/IB2019/051556 (87) International publication number: WO 2019/166955 (06.09.2019 Gazette 2019/36)

(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: 27.02.2018 IT 201800003067 (71) Applicant: ELBI International S.p.A. 10129 Torino (IT)	(72) Inventors: GAINO, Ugo 15020 Gabiano (AL) (IT) MARONE, Giuseppe 10042 Nichelino (TO) (IT) ROVERA, Alessandro 10129 Torino (IT) GAUDINO, Marco 10129 Torino (IT) AMICO, Piero 10129 Torino (IT) DA PONT, Paolo 10123 Torino (IT) (74) Representative: Vitillo, Giuseppe  Barzanò & Zanardo Milano S.p.A. Corso Vittorio Emanuele II, 61 10128 Torino 10128 Torino (IT)