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(11)

EP 4 419 760 A1

(12)

(43) Date of publication: 28.08.2024 Bulletin 2024/35 (21) Application number: 22789940.8 (22) Date of filing: 21.10.2022

(51) International Patent Classification (IPC):  E04D 3/30(2006.01) E04D 3/361(2006.01) E04D 3/363(2006.01) E04D 3/36(2006.01) E04D 3/362(2006.01) E04D 3/366(2006.01) (52) Cooperative Patent Classification (CPC): E04D 3/30; E04D 3/361; E04D 3/3607; E04D 3/362; E04D 3/363; E04D 2003/3612; E04D 3/366 (86) International application number: PCT/EP2022/079469 (87) International publication number: WO 2023/067189 (27.04.2023 Gazette 2023/17)

(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: 21.10.2021 IT 202100027128 (71) Applicant: Marchesi S.r.l. 42044 Gualtieri (RE) (IT)	(72) Inventor: MARCHESI, Renato 42016 Guastalla (RE) (IT) (74) Representative: Negrini, Elena  Agazzani & Associati S.r.l. Via dell'Angelo Custode 11/6 40141 Bologna 40141 Bologna (IT)