Hydraulic system for mining equipment and method of...

Tool driving or impacting – Automatic control of power operated means – Tool advance causing or controlling means

Reexamination Certificate

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Details

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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