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.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
Jun. 27, 2017
Applicant:
Kubota Corporation, Osaka, JP;
Inventors:
Assignee:
KUBOTA CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/042 (2006.01); F16H 61/4035 (2010.01); E02F 9/22 (2006.01); F16H 61/44 (2006.01); E02F 3/43 (2006.01); F15B 1/26 (2006.01); F15B 11/08 (2006.01); F15B 13/04 (2006.01); F15B 21/042 (2019.01); F16H 61/433 (2010.01); E02F 3/34 (2006.01); E02F 9/16 (2006.01);
U.S. Cl.
CPC ...
F15B 13/0426 (2013.01); E02F 3/431 (2013.01); E02F 9/22 (2013.01); E02F 9/226 (2013.01); E02F 9/2275 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01); F15B 1/26 (2013.01); F15B 11/08 (2013.01); F15B 13/0401 (2013.01); F15B 21/042 (2013.01); F16H 61/4035 (2013.01); F16H 61/44 (2013.01); E02F 3/3414 (2013.01); E02F 9/166 (2013.01); F15B 2211/20576 (2013.01); F15B 2211/30565 (2013.01); F15B 2211/411 (2013.01); F15B 2211/41518 (2013.01); F15B 2211/41581 (2013.01); F15B 2211/428 (2013.01); F15B 2211/62 (2013.01); F16H 61/433 (2013.01);
Abstract
A hydraulic system for a work machine includes a tank to store an operation fluid, a hydraulic device to be operated by the operation fluid, a control valve to control the hydraulic device, a first fluid tube connecting the hydraulic device and the control valve, the first fluid tube being to supply the operation fluid from the control valve to the hydraulic device, a second fluid tube branching from the first fluid tube and connected to the tank, a switch valve provided to the second fluid tube, the switch valve being to control a flow rate of the operation fluid, and an oil cooler provided to the second fluid tube between the switch valve and the tank.