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. 06, 2021

Filed:

Dec. 19, 2018
Applicant:

Kubota Corporation, Osaka, JP;

Inventors:

Yuji Fukuda, Osaka, JP;

Keigo Honda, Osaka, JP;

Yoshimitsu Tanaka, Osaka, JP;

Assignee:

KUBOTA CORPORATION, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/16 (2006.01); E02F 3/42 (2006.01); E02F 9/22 (2006.01); E02F 3/34 (2006.01); F15B 13/02 (2006.01); F15B 21/0423 (2019.01); F16K 11/07 (2006.01); F15B 13/04 (2006.01);
U.S. Cl.
CPC ...
F15B 11/16 (2013.01); E02F 3/3414 (2013.01); E02F 3/422 (2013.01); E02F 9/2225 (2013.01); E02F 9/2267 (2013.01); E02F 9/2271 (2013.01); E02F 9/2282 (2013.01); E02F 9/2285 (2013.01); E02F 9/2292 (2013.01); F15B 13/024 (2013.01); F15B 13/027 (2013.01); F15B 13/0402 (2013.01); F15B 21/0423 (2019.01); F15B 2013/0412 (2013.01); F15B 2211/20523 (2013.01); F15B 2211/20538 (2013.01); F15B 2211/30505 (2013.01); F15B 2211/315 (2013.01); F15B 2211/3116 (2013.01); F15B 2211/3122 (2013.01); F15B 2211/31535 (2013.01); F15B 2211/40507 (2013.01); F15B 2211/415 (2013.01); F15B 2211/45 (2013.01); F15B 2211/50518 (2013.01); F15B 2211/5159 (2013.01); F15B 2211/55 (2013.01); F15B 2211/565 (2013.01); F15B 2211/62 (2013.01); F15B 2211/7054 (2013.01); F15B 2211/71 (2013.01); F15B 2211/7128 (2013.01); F16K 11/07 (2013.01); F16K 11/0716 (2013.01);
Abstract

A hydraulic system includes a first hydraulic device, a second hydraulic device, a first control valve to control the first hydraulic device, a second control valve disposed on a downstream side of the first control valve and configured to control the second hydraulic device, a communication tube connecting the first hydraulic device to the first control valve, a supply fluid tube connecting the first control valve to the second control valve, a connection fluid tube disposed on the first control valve, the connection fluid tube connecting the communication tube to the supply fluid tube, a discharge fluid tube connected to the first control valve, a setting portion disposed on the discharge fluid tube and configured to increase a pressure in the discharge fluid tube, a branching fluid tube branched from the connection fluid tube and connected to the discharge fluid tube, and a throttle disposed on the branching fluid tube.


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