Method and device
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United States of America Patent
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Nov 15, 2011
Grant Date -
Oct 14, 2010
app pub date -
Apr 19, 2010
filing date -
May 23, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method for controlling a rock drilling process, in which an impulse-generating device comprising an impact element transmits a shock wave to a tool connected to the impulse-generating device, whereby a portion of the energy of the shock wave is transmitted to the rock by means of the tool and a portion of the energy of the shock wave is reflected and brought back to the impulse-generating device as reflected energy. The method comprises steps of generating at least one parameter value representing the reflected energy, and regulating the interaction of said impact element with said tool at least partially based on said value or values to control the rise time and/or length of said shock wave. The invention also relates to a regulation device, an impulse-generating device and a drilling rig.
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