(19)

(11)

EP 4 110 992 A1

(12)

(43) Date of publication: 04.01.2023 Bulletin 2023/01 (21) Application number: 21713470.9 (22) Date of filing: 23.02.2021

(51) International Patent Classification (IPC):  E01C 13/08(2006.01) (52) Cooperative Patent Classification (CPC): E01C 13/08 (86) International application number: PCT/IB2021/051510 (87) International publication number: WO 2021/171172 (02.09.2021 Gazette 2021/35)

(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: 24.02.2020 IT 202000003790 (71) Applicant: Sofisport S.r.l. 56121 Pisa (IT)	(72) Inventor: NUSCA, Roberto 56010 San Giuliano Terme (PI) (IT) (74) Representative: De Milato, Francesco et al ABM - Agenzia Brevetti & Marchi Patents Viale Giovanni Pisano, 31 56123 Pisa 56123 Pisa (IT)