(19)
(11) EP 2 831 375 A2

(12)

(88) Date of publication A3:
05.12.2013

(43) Date of publication:
04.02.2015 Bulletin 2015/06

(21) Application number: 13710305.7

(22) Date of filing: 15.03.2013
(51) International Patent Classification (IPC): 
E21C 27/34(2006.01)
(86) International application number:
PCT/EP2013/000804
(87) International publication number:
WO 2013/143658 (03.10.2013 Gazette 2013/40)
(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: 30.03.2012 DE 202012101169 U

(71) Applicant: Caterpillar Global Mining Europe GmbH
44534 Lünen (DE)

(72) Inventors:
  • HESSE, Norbert
    44795 Bochum (DE)
  • SIEPENKORT, Gerhard
    44534 Lünen (DE)
  • KLABISCH, Adam
    44319 Dortmund (DE)

(74) Representative: Kramer Barske Schmidtchen Patentanwälte PartG mbB 
European Patent Attorneys Landsberger Strasse 300
80687 München
80687 München (DE)

   


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