Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 8, 2021
Patent Application Number
16487083
Date Filed
February 24, 2017
Patent Citations
Patent Primary Examiner
Patent abstract
A hydraulic system arranged to control at least two hydraulic actuators via a metering control valve assembly. The hydraulic system is advantageous to control a pivoting arm of an undercutting mining machine according to at least two modes of operation including an idling mode and a cutting mode. In particular, the hydraulic actuators may be controlled by quantitative variation of fluid flow speed and pressure.
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