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:
Jul. 06, 2021

Filed:

Mar. 26, 2019
Applicant:

Kubota Corporation, Osaka, JP;

Inventors:

Yuji Fukuda, Osaka, JP;

Yoshimitsu Tanaka, Osaka, JP;

Keigo Honda, Osaka, JP;

Assignee:

KUBOTA CORPORATION, Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/22 (2006.01); F15B 11/16 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2225 (2013.01); E02F 9/2267 (2013.01); E02F 9/2271 (2013.01); E02F 9/2275 (2013.01); F15B 11/16 (2013.01); E02F 9/2285 (2013.01); E02F 9/2292 (2013.01); F15B 2211/30505 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/71 (2013.01);
Abstract

A hydraulic system includes a hydraulic pump, a first hydraulic actuator, a second hydraulic actuator, a first control valve to control the first hydraulic actuator, and a second control valve to control the second hydraulic actuator, the second control valve being arranged on a downstream side of the first control valve. The hydraulic system includes a first fluid tube in which a return fluid flows toward the second control valve. The first fluid tube couples the first control valve to the second control valve. The hydraulic system includes a second fluid tube in which a supply fluid flows toward to the first hydraulic actuator. The second fluid tube being connected to the first hydraulic actuator. The hydraulic system further a third fluid tube in which the return fluid in the first fluid tube flows toward the second fluid tube.


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