(19)

(11)

EP 3 884 108 A1

(12)

(43) Date of publication: 29.09.2021 Bulletin 2021/39 (21) Application number: 19832185.3 (22) Date of filing: 21.11.2019

(51) International Patent Classification (IPC):  E01F 13/12(2006.01) E01F 15/08(2006.01) (52) Cooperative Patent Classification (CPC): E01F 15/083; E01F 13/12 (86) International application number: PCT/IB2019/060039 (87) International publication number: WO 2020/104993 (28.05.2020 Gazette 2020/22)

(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: 21.11.2018 IT 201800010489 (71) Applicant: Tincar S.A.S. 10141 Torino (IT)	(72) Inventors: VANDI, Tiziano 10141 Torino (IT) PONZIO, Claudia 10141 Torino (IT) (74) Representative: Robba, Pierpaolo  Interpatent S.R.L. Via Caboto, 35 10129 Torino 10129 Torino (IT)