Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Youji Misaki0
Date of Patent
September 6, 2022
0Patent Application Number
161353890
Date Filed
September 19, 2018
0Patent Citations Received
Patent Primary Examiner
CPC Code
An excavator includes a hydraulic actuator driven by hydraulic oil discharged from a main pump to move a work element; a first control valve disposed in a center bypass pipeline; a second control valve disposed in a parallel pipeline; and a control device for controlling the movement of the second control valve. The first control valve and the second control valve are formed in a valve block of control valves, and the second control valve is disposed upstream of the first control valve.
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