Working machine

US9109344B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9109344-B2
Application numberUS-201013321599-A
CountryUS
Kind codeB2
Filing dateMay 19, 2010
Priority dateMay 29, 2009
Publication dateAug 18, 2015
Grant dateAug 18, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

In the working machine, first and second pilot flow paths are directly or indirectly connected to a tank flow path ( 52 ). A first restrictor is disposed between the first pilot flow path and the tank flow path. A second restrictor is disposed between the second pilot flow path and the tank flow path. An actuator control unit is configured to control an actuator based on a hydraulic pressure detected by a first hydraulic pressure detector unit and that detected by a second hydraulic pressure detector unit sensor.

First claim

Opening claim text (preview).

The invention claimed is: 1. A working machine comprising: an actuator; a hydraulic pump configured to discharge a hydraulic fluid; a pump flow path connected to the hydraulic pump; a tank configured to contain the hydraulic fluid; a tank flow path connected to the tank; an operating member; a first pilot pressure control unit including a first pump port connected to the pump flow path, a first tank port connected to the tank flow path, and a first supply/discharge por…

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What does patent US9109344B2 cover?
In the working machine, first and second pilot flow paths are directly or indirectly connected to a tank flow path ( 52 ). A first restrictor is disposed between the first pilot flow path and the tank flow path. A second restrictor is disposed between the second pilot flow path and the tank flow path. An actuator control unit is configured to control an actuator based on a hydraulic pressure de…
Who is the assignee on this patent?
Iizuka Kouya, Nishimura Satoru, Yoshida Hiroshi, and 2 more
What technology area does this patent fall under?
Primary CPC classification E02F9/2004. Mapped technology areas include Fixed Constructions.
When was this patent published?
Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).