(19)
(11) EP 2 668 341 A2

(12)

(43) Date of publication:
04.12.2013 Bulletin 2013/49

(21) Application number: 12705152.2

(22) Date of filing: 24.01.2012
(51) International Patent Classification (IPC): 
E02D(2006.01)
(86) International application number:
PCT/GB2012/050148
(87) International publication number:
WO 2012/101433 (02.08.2012 Gazette 2012/31)
(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

(30) Priority: 27.01.2011 DE 102011009632
07.12.2011 DE 102011120572

(71) Applicant: Minova International Limited
Park Road, Holmewood Industrial Park Chesterfield Derbyshire S42 5UY (GB)

(72) Inventor:
  • BRENNSTEINER, Ernst
    A-8750 Judenburg (AT)

(74) Representative: Foster, Simon 
Barker Brettell LLP First Floor, Atrium Court 15-17 Jockey's Fields
London WC1R 4BW
London WC1R 4BW (GB)

   


(54) DRILLING DEVICE FOR PERCUSSION OR ROTARY PERCUSSION DRILLING HAVING A COUPLING SLEEVE