(19)

(11)

EP 4 221 913 A1

(12)

(43) Date of publication: 09.08.2023 Bulletin 2023/32 (21) Application number: 21794970.0 (22) Date of filing: 01.10.2021

(51) International Patent Classification (IPC):  B21L 3/00(2006.01) B21L 7/00(2006.01) A44C 27/00(2006.01) B21L 11/00(2006.01) (52) Cooperative Patent Classification (CPC): B21L 11/005; B21L 3/00; B21L 7/00; A44C 27/00 (86) International application number: PCT/IB2021/059050 (87) International publication number: WO 2022/070158 (07.04.2022 Gazette 2022/14)

(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: 02.10.2020 IT 202000023233 (71) Applicant: Ombi S.r.L. 10019 Strambino (TO) (IT)	(72) Inventor: MONTANARO, Filomeno 10019 Strambino (TO) (IT) (74) Representative: Robba, Pierpaolo  Interpatent S.R.L. Via Caboto, 35 10129 Torino 10129 Torino (IT)