(19)

(11)

EP 3 420 138 A1

(12)

(43) Date of publication: 02.01.2019 Bulletin 2019/01 (21) Application number: 16707979.7 (22) Date of filing: 26.02.2016

(51) International Patent Classification (IPC):  E01F 15/06(2006.01) E04H 17/20(2006.01) E04H 17/08(2006.01) E04H 17/22(2006.01) (86) International application number: PCT/IB2016/051050 (87) International publication number: WO 2017/144952 (31.08.2017 Gazette 2017/35)

(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: MA MD (71) Applicant: Praesidiad NV 9052 Gent (BE)	(72) Inventor: MESSELIS, Timothy 8930 Menen (BE) (74) Representative: Cardoen, Annelies Andréa C. et al KOB NV President Kennedypark 31c 8500 Kortrijk 8500 Kortrijk (BE)