Patent ID: 6988469

Claim:
A combustion-engined setting tool, comprising a combustion chamber ( 22 ); a guide cylinder ( 5 ) adjoining the combustion chamber ( 22 ); a drive piston ( 8 ) displaceable in the guide cylinder(s) ( 5 ) in a setting direction upon combustion of a fuel gas in the combustion chamber ( 22 ); a metering chamber ( 49 ) for metering a predetermined amount of the fuel gas to the combustion chamber ( 22 ); a self-actuated pressure control valve ( 53 ) connected with the metering chamber ( 49 ) for adjusting an amount of the fuel gas that flows from the metering chamber ( 49 ) to the combustion chamber ( 22 ); and an ignition device ( 15 ) for igniting the fuel gas in the combustion chamber ( 22 ), wherein the pressure control valve ( 53 ) includes a servo component ( 54 ) for adjusting pressure in the metering chamber ( 49 ).