Rock drilling machine and use thereof for hindering occurrence and spreading of cavitation bubbles
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United States of America Patent
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Jan 22, 2019
Grant Date -
Dec 6, 2012
app pub date -
Mar 28, 2011
filing date -
Apr 1, 2010
priority date (Note) -
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Abstract
Rock drilling machine (10) comprising a piston that is arranged to move back and forth in a chamber (12a, 12b) when the rock drilling machine (10) is in use, a cavitation-sensitive component (14), and an oil channel that is arranged to extend between the chamber (12a, 12b) and said cavitation-sensitive component (14). The oil channel comprises a series of restrictions (18) and oil volumes (20) to hinder the movement of cavitation bubbles through said oil channel.
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