(19)

(11)

EP 3 826 777 A1

(12)

(43) Date of publication: 02.06.2021 Bulletin 2021/22 (21) Application number: 19763107.0 (22) Date of filing: 19.07.2019

(51) International Patent Classification (IPC):  B08B 3/06(2006.01) D06B 3/20(2006.01) D06B 23/02(2006.01) D06B 1/02(2006.01) D06B 5/08(2006.01) (86) International application number: PCT/IB2019/056199 (87) International publication number: WO 2020/021414 (30.01.2020 Gazette 2020/05)

(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: 25.07.2018 IT 201800007492 (71) Applicant: FERRARO S.p.A. 21015 Lonate Pozzolo (VA) (IT)	(72) Inventor: ZUCCHI, Alessandro 24023 Clusone BG (IT) (74) Representative: Barbaro, Gaetano et al Società Italiana Brevetti S.p.A. Via G. Carducci, 8 20123 Milano 20123 Milano (IT)