Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means
Reexamination Certificate
2011-03-08
2011-03-08
Rada, Rinaldi I (Department: 3721)
Tool driving or impacting
Automatic control of power operated means
Tool advance causing or controlling means
C173S008000, C173S011000
Reexamination Certificate
active
07900712
ABSTRACT:
In a hydraulic system for mining equipment and a method of adjusting the power of a rock drill machine, at least one mining actuator used for detaching rock is connected to a dedicated separate hydraulic circuit having a special hydraulic pump. The power of the mining actuator is adjusted by changing the hydraulic power generated by the separate hydraulic circuit of the hydraulic pump.
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Muona Jouko
Niemi Jaakko
Osara Jukka
Pöysti Tapani
Uitto Vesa
Drinker Biddle & Reath LLP
Rada Rinaldi I
Sandvik Mining and Construction Oy
Weeks Gloria R
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