Hydraulic system for work machine and work machine
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United States of America Patent
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May 12, 2020
Grant Date -
Oct 12, 2017
app pub date -
Jun 27, 2017
filing date -
Apr 7, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A hydraulic system for a work machine includes a tank to store an operation fluid, a hydraulic device to be operated by the operation fluid, a control valve to control the hydraulic device, a first fluid tube connecting the hydraulic device and the control valve, the first fluid tube being to supply the operation fluid from the control valve to the hydraulic device, a second fluid tube branching from the first fluid tube and connected to the tank, a switch valve provided to the second fluid tube, the switch valve being to control a flow rate of the operation fluid, and an oil cooler provided to the second fluid tube between the switch valve and the tank.
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