Working tool with damped handle
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United States of America Patent
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May 5, 2009
Grant Date -
Feb 15, 2007
app pub date -
Jul 13, 2004
filing date -
Jul 15, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a hand-held working tool, having a first unit, powered by a vibration on operation and a second unit which may be displaced relative to the first unit. A vibration isolation device is arranged between the first and second unit, having an actuator, for generation of a control force. An operational force acting in the working direction (A) between the first and the second unit may be at least partly compensated by the control force. The actuator is pneumatically operated and comprises an air spring for vibration isolation. A working piston in an air spring percussion device on the working tool serves to supply compressed air for the air spring. Alternatively, the compressed air can be supplied by the oscillating relative movement between the first unit and the second unit.
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