Work machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11454004
APP PUB NO 20210002868A1
SERIAL NO

16979338

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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To provide a work machine that makes it possible to drive actuators faster and more accurately by supplying flows to the actuators accurately at target rates without depending on load variations in a case where the machine body is controlled automatically by command inputs of a controller, while high operability is ensured for manual operation by an operator. In a case where a machine control function is cancelled via a machine control switch, a controller cancels limitation of the flow rate of a hydraulic fluid supplied to a plurality of directional control valves, the limitation being performed by the auxiliary flow rate control devices, and in a case where the machine control function is selected via the machine control switch, the controller causes the auxiliary flow rate control devices to limit the flow rate of the hydraulic fluid supplied to the plurality of directional control valves.

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Imura, Shinya Toride, JP 125 627
Kodaka, Katsuaki Tsukuba, JP 30 133
Kumagai, Kento Ami-Machi, JP 13 11
Sugiyama, Genroku Tsuchiura, JP 99 1456
Tsuruga, Yasutaka Ryugasaki, JP 65 276

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