(19)

(11)

EP 4 153 379 A2

(12)

(88) Date of publication A3: 10.02.2022 (43) Date of publication: 29.03.2023 Bulletin 2023/13 (21) Application number: 21733855.7 (22) Date of filing: 19.05.2021

(51) International Patent Classification (IPC):  B24C 1/04(2006.01) B24C 7/00(2006.01) B24C 3/06(2006.01) B24C 5/02(2006.01) B44C 1/22(2006.01) (52) Cooperative Patent Classification (CPC): B24C 7/0046; B24C 1/04; B44C 1/221; B24C 3/06; B24C 5/02; B44B 3/009 (86) International application number: PCT/IB2021/054305 (87) International publication number: WO 2021/234590 (25.11.2021 Gazette 2021/47)

(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: 20.05.2020 IT 202000011674 (71) Applicant: I.CAR S.r.l. 40069 Zola Predosa (BO) (IT)	(72) Inventor: MURIANA, Roberto 40123 Bologna (BO) (IT) (74) Representative: Provvisionato, Paolo  Provvisionato & Co S.r.l. Piazza di Porta Mascarella 7 40126 Bologna 40126 Bologna (IT)