(19)

(11)

EP 3 781 760 A1

(12)

(43) Date of publication: 24.02.2021 Bulletin 2021/08 (21) Application number: 19725240.6 (22) Date of filing: 19.04.2019

(51) International Patent Classification (IPC):  E04G 11/48(2006.01) E04G 17/00(2006.01) E04G 11/50(2006.01) (86) International application number: PCT/IT2019/050079 (87) International publication number: WO 2019/202623 (24.10.2019 Gazette 2019/43)

(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: 20.04.2018 IT 201800004745 (71) Applicant: Hünnebeck Italia S.p.A. 22078 Turate (IT)	(72) Inventor: MARAN, Giuseppe 30027 SAN DONA' DI PIAVE (IT) (74) Representative: Petraz, Gilberto Luigi et al GLP S.r.l. Viale Europa Unita, 171 33100 Udine Viale Europa Unita, 171 33100 Udine (IT)