Patent ID: 8152416

Claim:
A device for expanding and evacuating an expandable part ( 2 ) of a rock anchor ( 1 ), the device comprising: an anchor plate; and an adapter ( 6 ) removably attachable to the anchor ( 1 ), wherein the adapter is connected both, via at least one fluid line ( 7 , 8 ), to a pump ( 9 ) and also to the expandable part ( 2 ), the pump connected to a fluid source providing fluid for expanding the expandable part ( 2 ) by fluid-filling the expandable part ( 2 ), and wherein the adapter is further connected to a gas supply, the gas supply arranged for evacuating the fluid-filled expandable part ( 2 ) in a controlled manner by emerging the pressurized gas into the fluid-filled part ( 2 ) and pressurized gas routing the fluid out of the expandable part ( 2 ).