Patent ID: 7527107

Claim:
A handheld working tool, comprising: a first unit excited by vibration during operation, a second unit that is capable of being moved at least in a working direction (A) relative to the first unit, and a vibration isolation device situated effectively between the first unit and the second unit, the vibration isolating device having at least one actuator for producing an actuating force with which an operating force acting in the working direction (A) between the first unit and the second unit is able to be at least partly compensated, and the actuator being pneumatically operated, wherein the actuator has a handle air spring whose filling with compressed air is able to be modified, and wherein a spring device is situated parallel to the actuator, between the first unit and the second unit, wherein the working tool is a drilling and/or impact hammer, the second unit has a handle, in the first unit there is provided a pneumatic spring hammer mechanism having a drive piston driven by a motor for driving an impact piston by means of an air spring that is able to be produced between the drive piston and the impact piston, and wherein the drive piston is fashioned for the production of compressed air for supplying the actuator.