(19)

(11)

EP 4 308 343 A1

(12)

(43) Date of publication: 24.01.2024 Bulletin 2024/04 (21) Application number: 22716107.2 (22) Date of filing: 16.03.2022

(51) International Patent Classification (IPC):  B24B 41/047(2006.01) B24B 23/03(2006.01) (52) Cooperative Patent Classification (CPC): B24B 41/047; B24B 23/03 (86) International application number: PCT/IB2022/052358 (87) International publication number: WO 2022/195493 (22.09.2022 Gazette 2022/38)

(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: 17.03.2021 IT 202100006359 (71) Applicant: Rupes S.p.A. 20071 Vermezzo con Zelo (MI) (IT)	(72) Inventor: CASTIGLION, Riccardo 10023 Chieri (TO) (IT) (74) Representative: Wörz, Volker Alfred  Wörz Patentanwälte PartG mbB Gablenberger Hauptstraße 32 70186 Stuttgart 70186 Stuttgart (DE)