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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.:

US 12428814 B1

PDFFull Text
Date of Patent:
Sep. 30, 2025

Filed:

Dec. 12, 2022

Working machine

Applicant:

Kubota Corporation, Osaka, JP;

Inventor:

Hiroshi Horii, Osaka, JP;

Assignee:

KUBOTA CORPORATION, Osaka, JP;

Attorney:

GREENBLUM & BERNSTEIN, P.L.C.

Primary Examiner:

Abiy Teka

Int. Cl.
CPC ...
E02F 9/22 (2006.01); E02F 3/32 (2006.01); E02F 3/42 (2006.01); E02F 3/43 (2006.01); E02F 9/20 (2006.01); F15B 13/02 (2006.01); F15B 13/06 (2006.01); F15B 15/00 (2006.01);
U.S. Cl.
CPC ...
E02F 9/2203 (2013.01); E02F 3/325 (2013.01); E02F 3/425 (2013.01); E02F 3/435 (2013.01); E02F 9/2004 (2013.01); E02F 9/2253 (2013.01); E02F 9/2285 (2013.01); E02F 9/2292 (2013.01); E02F 9/2296 (2013.01); F15B 13/02 (2013.01); F15B 13/06 (2013.01); F15B 15/00 (2013.01);
Abstract

A working machine includes a machine body, a first hydraulic actuator mounted on the machine body, a first control valve that controls the first hydraulic actuator, a controller that controls the first control valve, and a second hydraulic actuator that is different from the first hydraulic actuator. When the second hydraulic actuator and the first hydraulic actuator are operated in combination, the controller reduces the amount of change in the flow rate of a hydraulic fluid supplied from the first control valve to the first hydraulic actuator with respect to changes in a manipulation amount to operate the first hydraulic actuator to a value smaller than that when the first hydraulic actuator is solely operated.

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