Patent ID: 7841803
Filing Date: 2010-11-30
Classification: E21B,E21D

Abstract:
1. An adapter device ( 1 ) for connecting a drilling machine ( 3 ) to a self drilling rock bolt ( 7 ) for rock bolting, said adapter device including an adapter element ( 14 ) which is sealingly surrounded by a swivel sleeve ( 13 ) that is arranged for connection of an axial channel through the adapter device ( 20 ), which in operation cooperates with an axial flushing channel in the rock bolt, to at least one external source for flushing medium ( 8 ) and bolt grouting medium ( 9 ), wherein the adapter element ( 14 ) at a distal end ( 11 ) includes a thread for connecting to a corresponding thread on the rock bolt ( 7 ), wherein the adapter element (