(19)

(11)

EP 3 607 144 A1

(12)

(43) Date of publication: 12.02.2020 Bulletin 2020/07 (21) Application number: 18780906.6 (22) Date of filing: 03.04.2018

(51) International Patent Classification (IPC):  E01B 7/02(2006.01) (86) International application number: PCT/CZ2018/000012 (87) International publication number: WO 2018/184603 (11.10.2018 Gazette 2018/41)

(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: 06.04.2017 CZ 201733584 U (71) Applicant: DT- Vyhybkárna A Strojirna, A.S. 797 01 Prostejov (CZ)	(72) Inventor: VENCLÍK, Jirí 752 01 Kojetín (CZ) (74) Representative: Holasova, Hana  Krizova 4 CZ-603 00 Brno CZ-603 00 Brno (CZ)