Patent ID: 7308997

Claim:
A solid propellant-driven setting tool for driving fastening elements in a constructional component, comprising a piston guide ( 13 ) having a guide space ( 14 ); a setting piston ( 15 ) displaceably arranged in the guide space ( 14 ) of the piston guide ( 13 ); a combustion chamber ( 20 ) adjoining the piston guide ( 13 ); a receptacle ( 18 ) for receiving a solid propellant charge ( 41 ) and adjoining the combustion chamber ( 20 ) at the end of the combustion chamber ( 20 ) remote from the piston guide ( 13 ); and a means ( 30 ) for adjusting the setting energy by controlling an amount of combustion gases applied to the setting piston ( 15 ), the setting energy adjusting means ( 30 ) having a separation member ( 31 ) adjustably arranged between the solid propellant charge receptacle ( 18 ) and the guide space ( 14 ) of the piston guide ( 13 ) and dividing the combustion chamber ( 20 ) in a first sub-chamber ( 21 ) arranged between the receptacle ( 18 ) and the separation member ( 31 ) and a second sub-chamber ( 22 ) arranged between the separation member ( 31 ) and the guide space ( 14 ) of the piston guide ( 13 ), the separation member ( 31 ) having a plurality of through-openings ( 34 , 35 ) for controlling flow of the combustion gases into the guide space ( 14 ) of the piston guide ( 13 ), the through-openings ( 34 , 35 ) having an active opening cross-section, with an active opening cross-section of at least a portion of the through-openings ( 34 , 35 ) changing dependent on an adjustable position of the separation member ( 31 ).