(19)

(11)

EP 2 697 432 A1

(12)

(43) Date of publication: 19.02.2014 Bulletin 2014/08 (21) Application number: 12721706.5 (22) Date of filing: 12.04.2012

(51) International Patent Classification (IPC):  E01B 7/12(2006.01) (86) International application number: PCT/CZ2012/000032 (87) International publication number: WO 2012/139537 (18.10.2012 Gazette 2012/42)

(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 (30) Priority: 14.04.2011 CZ 20110215 (71) Applicant: DT- Vyhybkárna A Strojirna, A.S. 797 11 Prostejov (CZ)	(72) Inventors: CERNÝ, Petr 796 08 Otaslavice (CZ) SMOLKA, Marek 798 23 Klenovice na Hané (CZ) (74) Representative: Holasova, Hana  Krizova 4 CZ-603 00 Brno CZ-603 00 Brno (CZ)