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:
Jun. 24, 2025
Filed:
Sep. 14, 2020
Komatsu Ltd., Tokyo, JP;
Yuita Takenaka, Tokyo, JP;
Yuichi Teranishi, Tokyo, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
A valve system includes a valve configured to adjust a flow rate of hydraulic fluid in order to steer a work machine, and a control section configured to determine a command signal sent to the valve. The command signal determines a command flow rate of the hydraulic fluid based on a target flow rate corresponding to an input operation command and a change amount in the target flow rate. The control section is configured to control the change amount according to a magnitude of a reversal operation command when receiving the reversal operation command in order to operate the work machine in a direction opposite to a direction in which steering is operating. A work machine includes the valve system, a front frame, a rear frame, an articulate mechanism rotatably connecting the front frame to the rear frame, and a hydraulic actuator.