Quick coupler circuit and quick coupler attachment/detachment method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11105063
APP PUB NO 20190330819A1
SERIAL NO

16471337

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A quick coupler circuit for attaching and detaching an attachment to a quick coupler includes a coupler cylinder, an actuator, a first hydraulic pump, a boosting valve, a coupler changeover valve, and a changeover switch. The boosting valve switches to a boosting position and the coupler changeover valve switches to a lock-side position when the changeover switch switches to a lock position. When the changeover switch switches to a hold position, the boosting valve switches to a non-boosting position and the coupler changeover valve switches to the lock-side position. When the changeover switch switches to an unlock position, the boosting valve switches to the boosting position and the coupler changeover valve switches to an unlock-side position.

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Patent Owner(s)

  • KOMATSU LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sato, Koji Tokyo, JP 446 3955
Takiguchi, Takahide Tokyo, JP 9 95

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