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(11)

EP 2 425 097 A2

(12)

(88) Date of publication A3: 23.12.2010 (43) Date of publication: 07.03.2012 Bulletin 2012/10 (21) Application number: 10719100.9 (22) Date of filing: 21.04.2010

(51) International Patent Classification (IPC):  E21D 15/44(2006.01) E21D 15/51(2006.01) F16K 17/04(2006.01) E21D 15/46(2006.01) E21D 23/16(2006.01) (86) International application number: PCT/IB2010/051753 (87) International publication number: WO 2010/125500 (04.11.2010 Gazette 2010/44)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 29.04.2009 DE 202009004753 U (71) Applicant: Bucyrus Europe GmbH 44534 Lünen (DE)	(72) Inventors: SUILMANN, Franz-Heinrich 59368 Werne (DE) DWORNIK, Oliver 44532 Lünen (DE) (74) Representative: Althaus, Arndt  Patentanwälte, Buschhoff Hennicke Althaus Postfach 19 04 08 50501 Köln 50501 Köln (DE)