(19)

(11)

EP 3 847 302 A1

(12)

(43) Date of publication: 14.07.2021 Bulletin 2021/28 (21) Application number: 19778695.7 (22) Date of filing: 27.08.2019

(51) International Patent Classification (IPC):  D06F 37/42(2006.01) D06F 39/14(2006.01) (86) International application number: PCT/IT2019/050191 (87) International publication number: WO 2020/049603 (12.03.2020 Gazette 2020/11)

(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: 07.09.2018 IT 201800008406 (71) Applicant: Bitron S.p.A. 10122 Torino (IT)	(72) Inventors: PROMUTICO, Fabrizio 10122 Torino (IT) RAIMONDI, Giulio 10122 Torino (IT) (74) Representative: Tiburzi, Andrea et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)