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United States of America Patent

PATENT NO 11913198
APP PUB NO 20210047808A1
SERIAL NO

16979281

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A controller mounted in a hydraulic excavator includes: a state transition section that performs switchover between two types of control that are manual control and semiautomatic control, on the basis of input of a state switching signal; and a velocity transition section that changes a rate of change with time in a velocity of a boom cylinder from a first rate of change I1 to a second rate of change I2 greater than the first rate of change I1 in a case in which input to an operation lever changes since the state transition section switches over between the two types of control until the velocity of the boom cylinder changes to a velocity Vo(t) specified by the control after the switchover between the two types of control.

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY CO., LTD.

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Uji, Katsumasa Tsukuba, JP 6 9
Yamada, Hiroyuki Hitachinaka, JP 455 5044

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