(19)

(11)

EP 3 969 667 A1

(12)

(43) Date of publication: 23.03.2022 Bulletin 2022/12 (21) Application number: 20722601.0 (22) Date of filing: 06.05.2020

(51) International Patent Classification (IPC):  E02B 3/04(2006.01) E02B 3/12(2006.01) E02B 3/10(2006.01) (52) Cooperative Patent Classification (CPC): E02B 3/04 (86) International application number: PCT/EP2020/062541 (87) International publication number: WO 2020/229253 (19.11.2020 Gazette 2020/47)

(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: 13.05.2019 IT 201900006748 (71) Applicant: Rina Consulting S.p.A. 16145 Genova (IT)	(72) Inventor: ZANGANI, Donato 16156 GENOVA (IT) (74) Representative: Modiano, Micaela Nadia et al Modiano & Partners Via Meravigli, 16 20123 Milano 20123 Milano (IT)