(19)
(11) EP 1 749 144 A1

(12)

(43) Date of publication:
07.02.2007 Bulletin 2007/06

(21) Application number: 05732230.7

(22) Date of filing: 18.04.2005
(51) International Patent Classification (IPC): 
E21D 21/00(2006.01)
(86) International application number:
PCT/SE2005/000555
(87) International publication number:
WO 2005/113939 (01.12.2005 Gazette 2005/48)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
HR LV YU

(30) Priority: 24.05.2004 SE 0401317

(71) Applicant: Atlas Copco Rock Drills AB
701 91 Örebro (SE)

(72) Inventors:
  • ÖBERG, Fredrik
    S-702 16 Örebro (SE)
  • BUREAU, Mario
    River Cub 2149 (ZA)
  • CHARETTE, François
    St-Lazare, Quebec J7T 2CI (CA)

(74) Representative: Janson, Ronny 
Ehrner & Delmar Patentbyra AB, Box 10316
100 55 Stockholm
100 55 Stockholm (SE)

   


(54) ROCK BOLTING METHOD AND ROCK BOLT