The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 19, 2022

Filed:

Aug. 07, 2020
Applicant:

Kubota Corporation, Osaka, JP;

Inventors:

Yuji Fukuda, Osaka, JP;

Keigo Honda, Osaka, JP;

Ryosuke Kinugawa, Osaka, JP;

Ryuki Nishimoto, Osaka, JP;

Yuji Yamashita, Osaka, JP;

Daisuke Sakurai, Osaka, JP;

Assignee:

KUBOTA CORPORATION, Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/22 (2006.01); F15B 11/08 (2006.01); F15B 13/02 (2006.01); F15B 1/26 (2006.01); F15B 1/02 (2006.01); F15B 21/0427 (2019.01); F16L 55/04 (2006.01); E02F 3/34 (2006.01);
U.S. Cl.
CPC ...
F15B 13/021 (2013.01); E02F 9/2203 (2013.01); E02F 9/2207 (2013.01); E02F 9/2217 (2013.01); E02F 9/2267 (2013.01); F15B 1/02 (2013.01); F15B 1/26 (2013.01); F15B 11/08 (2013.01); F15B 21/0427 (2019.01); E02F 3/3414 (2013.01); F15B 2201/411 (2013.01); F15B 2211/30565 (2013.01); F15B 2211/3127 (2013.01); F15B 2211/31558 (2013.01); F15B 2211/329 (2013.01); F15B 2211/625 (2013.01); F15B 2211/635 (2013.01); F15B 2211/66 (2013.01); F15B 2211/6658 (2013.01); F15B 2211/8613 (2013.01); F15B 2211/8616 (2013.01); F15B 2215/30 (2013.01); F16L 55/04 (2013.01);
Abstract

A hydraulic system for a working machine includes a hydraulic actuator having a first fluid chamber and a second fluid chamber, an accumulator, an outputting fluid tube to output an operation fluid, and a switching valve to be switched between a first position and a second position. The first position allows the first fluid chamber and the second fluid chamber to be communicated with the outputting fluid tube and thereby allowing a floating operation. The second position allows the first fluid chamber and the accumulator to be communicated with each other, allows the second fluid chamber and the outputting fluid tube to be communicated with each other, and thereby allows an anti-vibration operation.


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