(19)
(11) EP 2 697 469 A1

(12)

(43) Date of publication:
19.02.2014 Bulletin 2014/08

(21) Application number: 12770573.9

(22) Date of filing: 13.04.2012
(51) International Patent Classification (IPC): 
E21B 3/02(2006.01)
 E21B 19/16(2006.01)
(86) International application number:
PCT/FI2012/050364
(87) International publication number:
WO 2012/140326 (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

(30) Priority: 15.04.2011 FI 20115366

(71) Applicant: Sandvik Mining and Construction Oy
33330 Tampere (FI)

(72) Inventors:
  • UKONJÄRVI, Tapio
    FI-33530 Tampere (FI)
  • LEMMETTY, Pauli
    FI-33330 Tampere (FI)
  • HEDLUND, Juha
    FI-33330 Tampere (FI)
  • MÄKI, Jorma
    FI-33330 Tampere (FI)

(74) Representative: Kolster Oy Ab 
Iso Roobertinkatu 23 PO Box 148
00121 Helsinki
00121 Helsinki (FI)

   


(54) ROTATION UNIT, ROCK DRILLING UNIT AND METHOD FOR ROCK DRILLING