US Patent 11434937 Excavator and control valve for excavator
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Patent Inventor Names
Youji Misaki0
Edits on 22 Sep, 2022
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Patent Number
114349370
Date of Patent
September 6, 2022
0Patent Application Number
161353890
Date Filed
September 19, 2018
0Patent Primary Examiner
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US Patent 11434937 Excavator and control valve for excavator
Article
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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Is a
Patent Jurisdiction
Patent Number
11434937
Date of Patent
September 6, 2022
Patent Application Number
16135389
Date Filed
September 19, 2018
Patent Primary Examiner
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