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:
Apr. 23, 2019
Filed:
Oct. 26, 2016
Komatsu Ltd., Tokyo, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
An articulated work vehicle with linked front and rear frames includes a hydraulic actuator, a joystick lever operated by an operator, a control valve, a force imparting component, and a controller. The hydraulic actuator is driven hydraulically to change a steering angle of the front frame with respect to the rear frame. The control valve is linked to the joystick lever, to control flow of fluid supplied to the hydraulic actuator according to an operation amount of the joystick lever, and to restrict the operation amount of the joystick lever to a predetermined range. The force imparting component imparts an assist force or a counterforce to the operation of the joystick lever by the operator. The controller controls the force imparting component so as to decrease the assist force or increase the counterforce before the operation of the joystick lever is restricted by the control valve.