A combustion chamber featuring an orifice plate which promotes complete, clean, and consistent combustion of the propellant charge used in a powder actuated tool. The combustion chamber allows extended operation of a power adjustment which has improved energy variance, a higher range of power adjustment, and complete clean combustion at any power level.
A combustion-operated setting tool for driving fastening elements in a constructional component includes a device (30) for adjusting setting energy applied to a setting piston (15) axially displaceable in a guide space (4) of a piston guide (13). The adjusting device (30) has a separation member (31) adjustably arranged between the 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), 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).
A method and apparatus for precisely locating materials on a foundation includes an elongated survey rod, including a triggering surface, and fastener driver secured to the survey rod. The fastener driver includes a trigger. The triggering surface is located in a position to selectively activate the trigger when the fastener is located at a desired precise location on a foundation.
