Percussion device
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United States of America Patent
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Nov 22, 2011
Grant Date -
Jan 29, 2009
app pub date -
Mar 22, 2006
filing date -
Mar 24, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for controlling the operation of a pressure fluid operated percussion device and to a pressure fluid operated percussion device. The method includes influencing the shape of a stress wave by setting a suitable clearance between a transmission piston and a tool. The percussion device is provided with a device for setting the clearance between the transmission piston and the tool.
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