Working tool which can be guided in a grab handle

A tool with active vibration damping comprising:

• (A) a tool housing;
• (B) an operating element which is supported on the tool housing and which comprises one of a tamper, a vibration plate, a vibration roll, and a hammer;
• (C) a power drive which drives said operating element for at least one of 1) the percussive, pounding, or vibratory loading a braking of a material to be worked and 2) a breaking or a drilling of a material to be worked;
• (D) a handle which is supported on said tool housing and which guides said tool, wherein, during operation of said tool, said handle is potentially subject to vibrational forces transmitted to said handle from a source of vibration through a potential vibration transmission path;
• (E) a vibration sensor which is mounted to said tool and which is configured to sense vibrations at least one of in and on said tool and to generate an oscillating vibration signal having a phase;
• (F) a regulating and control unit which is coupled to said vibration sensor;
• and
• (G) an active compensation element which is dynamically energized by said regulating and control unit in response to the vibration signal to counteract vibrational forces being transmitted towards said handle from said source, wherein said compensation element produces at least one of a compensating force and a compensating movement in the potential vibration transmission path that varies as a function of vibrations generated by the source, and wherein said compensation element is energized in antiphase to the vibration signal produced by the vibration sensor.