Work machine

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12231036
APP PUB NO 20220282456A1
SERIAL NO

17629674

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A work machine includes: a controller; a first electrical circuit provided with a first power supply that supplies power to the controller; an electric drive source necessary for operating the work machine; and a second electrical circuit provided with a second power supply that supplies power to the electric drive source. The work machine further includes: a capacitor provided to the second electrical circuit; a first precharge device that performs precharge of the capacitor by using power of the first power supply; and a second precharge device that performs precharge of the capacitor by using power of the second power supply. The controller performs precharge by using one of the precharge devices when it is determined that precharge by using the other one of the precharge devices is impossible.

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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
Imai, Yusuke Arakawa-ku, JP 62 195
Ota, Yasunori Tsuchiura, JP 19 248
Watanabe, Akira Ushiku, JP 324 4667
Yano, Manabu Nagareyama, JP 16 178

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges57000255075100125150175200225250275300325350375400425450475500525550575600

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