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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 11391308 B1

PDFFull Text
Date of Patent:
Jul. 19, 2022

Filed:

Apr. 11, 2018

Work vehicle

Applicant:

Komatsu Ltd., Tokyo, JP;

Inventors:

Yushi Tanaka, Tokyo, JP;

Ryosuke Maeda, Tokyo, JP;

Masaaki Imaizumi, Tokyo, JP;

Assignee:

Komatsu Ltd., Tokyo, JP;

Attorney:

Locke Lord LLP

Primary Examiner:

Abiy Teka

Int. Cl.
CPC ...
E02F 9/22 (2006.01); F15B 21/08 (2006.01); B60P 1/16 (2006.01); B60Q 9/00 (2006.01); F15B 11/17 (2006.01); B60R 3/00 (2006.01); B62D 33/06 (2006.01); E02F 3/34 (2006.01); E02F 9/08 (2006.01); E02F 9/16 (2006.01); E02F 9/20 (2006.01);
U.S. Cl.
CPC ...
F15B 21/087 (2013.01); B60P 1/162 (2013.01); B60Q 9/00 (2013.01); E02F 9/2225 (2013.01); E02F 9/2267 (2013.01); F15B 11/17 (2013.01); B60K 2370/152 (2019.05); B60K 2370/162 (2019.05); B60R 3/00 (2013.01); B62D 33/0617 (2013.01); E02F 3/34 (2013.01); E02F 9/0833 (2013.01); E02F 9/16 (2013.01); E02F 9/2004 (2013.01);
Abstract

A work vehicle includes: a hydraulic pump driven by an engine; a hydraulic actuator that is driven by hydraulic oil supplied from the hydraulic pump; a switching valve configured to switch from one to the other of a first state in which the hydraulic oil supplied from the hydraulic pump is supplied to a first channel and a second state in which the hydraulic oil supplied from the hydraulic pump is supplied to a second channel; a restriction operation device configured to generate an operation signal that restricts the drive of the hydraulic actuator; and a controller that controls the switching valve. The controller includes: an operation signal acquisition unit configured to acquire the operation signal; and an instruction output unit configured to output, to the switching valve, a control instruction that restricts the drive of the hydraulic actuator with the engine driving, in response to the operation signal.

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