Patent ID: 7811031
Filing Date: 2010-10-12
Classification: E21D

Abstract:
1. A device ( 5 ) for installing a pressure fluid expandable rock bolt ( 4 ) of the kind having a tubular expansion and a fitting portion, said device at a distal portion having chuck means ( 12 ) including gripping means and sealing means arranged to grip said fitting portion and to establish a sealed connection between a fluid source and a fluid inlet of said rock bolt, said device extending essentially in an axial direction, wherein the device at a proximal portion includes a holder portion ( 11 ) that is adapted to be fitted to a drill string engagement element ( 27 ) of a rock drilling machine ( 3 ), and wherein the device includes flexing means ( 13 ) positioned axially between the chuck means and the holder portion for allowing a limited pivoting movement between the chuck means and the holder portion.