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(11)

EP 4 515 038 A1

(12)

(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23722672.5 (22) Date of filing: 12.04.2023

(51) International Patent Classification (IPC):  E01F 7/04(2006.01) E02D 17/20(2006.01) E02B 3/12(2006.01) (52) Cooperative Patent Classification (CPC): E01F 7/04; E02D 17/202; E02B 3/122 (86) International application number: PCT/IB2023/053737 (87) International publication number: WO 2023/209476 (02.11.2023 Gazette 2023/44)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 27.04.2022 IT 202200008300 (71) Applicant: Hyper Fibers S.r.l. 44011 Argenta (FE) (IT)	(72) Inventor: BRUSA, Nicola 44011 ARGENTA (FERRARA) (IT) (74) Representative: Bellomia, Paolo  Bugnion S.p.A. Rome Office Via Sallustiana, 15 00187 Roma 00187 Roma (IT)