Power-operated construction machine

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12241224
APP PUB NO 20220259818A1
SERIAL NO

17639826

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An upper revolving structure (4) of an electric hydraulic excavator (1) includes a revolving frame (7), an operator's seat (10), an electric motor (15), a hydraulic pump (17) driven by the electric motor (15), an oil tank (18), and an exterior cover (20) disposed in the revolving frame (7) to cover electrical equipment including the electric motor (15) and hydraulic equipment including the hydraulic pump (17) and the oil tank (18). A partitioning member (25) that is disposed in the revolving frame (7) to partition an inside of the exterior cover (20) into an electrical equipment room (28) and a hydraulic equipment room (29). An electrical equipment cooling device (31) including an electrical equipment cooling fan (34) is disposed in the electrical equipment room (28), and a hydraulic equipment cooling device (35) including a hydraulic equipment cooling fan (37) is disposed in the hydraulic equipment room (29).

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First Claim

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Family

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Patent Owner(s)

  • HITACHI CONSTRUCTION MACHINERY TIERRA CO., LTD

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furukawa, Yuta Koka, JP 18 68
Kihara, Seiichi Koka, JP 13 109
Takahashi, Kiwamu Moriyama, JP 78 336

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