Patent ID: 7096832

Claim:
A combustion-operated working tool including a setting tool for fastening elements comprising: a housing ( 1 ); a guide cylinder ( 5 ) axially displaceable relative to the device housing ( 1 ); a piston ( 9 ) mounted displaceable in the guide cylinder ( 5 ); a stop ( 8 ) integral with the device housing projecting into the guide cylinder ( 5 ) to delimit an engagement of the piston ( 9 ) in a direction of advance of the piston ( 6 ) when the guide cylinder ( 5 ) is shifted in the direction of advance of the piston ( 6 ); an elastic adjusting element ( 21 – 23 ); 52 , 53 ) that is connected to the guide cylinder ( 5 ) and is tensioned upon movement of the guide cylinder ( 5 ) into the tool housing ( 1 ); and an engagement part ( 28 , 31 , 41 ) for engaging the piston ( 9 ) in a direction opposite the direction of advance of the piston ( 9 ), wherein upon movement of the guide cylinder ( 5 ) out of the tool housing ( 1 ), the engagement part ( 28 , 31 , 41 ) is driven by the elastic adjusting element ( 21 – 23 , 52 , 53 ) for engaging the piston ( 9 ) in a direction opposite the direction of advance of the piston ( 9 ).