Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Bon Seuk Ku0
Date of Patent
March 29, 2022
0Patent Application Number
172711170
Date Filed
August 30, 2018
0Patent Citations
Patent Primary Examiner
Provided is a hydraulic circuit of construction equipment, including a boom cylinder for controlling ascending and descending movement of a boom, which includes a valve unit having a first control valve configured to control a large chamber of the boom cylinder to selectively communicate with a small chamber of the boom cylinder, a second control valve configured to control the large chamber to selectively communicate with an oil tank, a third control valve configured to control the large chamber to selectively communicate with an accumulator, and a fourth control valve configured to control a part of hydraulic oil flowing to the accumulator to selectively flow to an assist motor.
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