(19)

(11)

EP 3 947 925 A1

(12)

(43) Date of publication: 09.02.2022 Bulletin 2022/06 (21) Application number: 20723199.4 (22) Date of filing: 03.04.2020

(51) International Patent Classification (IPC):  F01L 1/18(2006.01) F01L 1/26(2006.01) F01L 13/06(2006.01) (52) Cooperative Patent Classification (CPC): F01L 2013/105; F01L 1/267; F01L 13/065; F01L 1/181; F01L 2001/0475; F01L 2305/00 (86) International application number: PCT/IB2020/053201 (87) International publication number: WO 2020/202094 (08.10.2020 Gazette 2020/41)

(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 (30) Priority: 03.04.2019 IT 201900005022 (71) Applicant: Streparava S.p.A. Con Socio Unico 25030 Adro (IT)	(72) Inventors: FERRARIO, Davide 25030 ADRO (BS) (IT) MONDINI, Claudio 25030 Adro (BS) (IT) MEGA, Francesco 25030 Adro (BS) (IT) MAGNI, Matteo 25030 Adro (BS) (IT) (74) Representative: Cicchetti, Angelo et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)