Construction machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12000118
APP PUB NO 20220364337A1
SERIAL NO

17765570

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A construction machine makes it possible for an operator to linearly push a bucket by operating an arm in a pushing direction. A controller is configured to, in case a straight locus is selected by a bucket locus selecting device, calculate a constant flow rate ratio according to a boom initial angle that is an angle of a boom sensed by a boom angle sensor at a time point when an arm is operated in a pushing direction by an operation device, and control the delivery flow rate of a first hydraulic pump such that a hydraulic fluid is discharged from a boom cylinder cap chamber at a flow rate obtained by multiplying a flow rate of a flow supplied to an arm cylinder cap chamber by the flow rate ratio while the arm is operated in the pushing direction and there is no boom operating instruction.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HITACHI CONSTRUCTION MACHINERY CO LTD16-1 HIGASHIUENO 2-CHOME TAITO-KU TOKYO 1100015 ?1100015

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hiraku, Kenji Tsuchiura, JP 60 526
Saitoh, Teppei Tokyo, JP 25 122
Shimizu, Juri Tokyo, JP 22 121
Takahashi, Hiromasa Tsuchiura, JP 131 1287

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