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:
Aug. 31, 2021
Filed:
Mar. 05, 2018
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
An autonomous traveling vehicle, equipped with autonomous traveling function on a standard machine, has a high-pressure selector valve placed on a flow path in which pressure-oil is supplied from a standard brake valve (SBV) installed in the standard machine to a hydraulic brake. A flow path is installed to connect the high-pressure selector valve and an autonomous brake control valve (ABCV) that is supplied with pressure-oil delivered by a hydraulic pump. Further, an autonomous traveling controller is installed to perform control for autonomous travel, and an autonomous brake controller is installed to perform open or close control on the ABCV in response to a braking instruction from the autonomous traveling controller. When the brake pedal is stepped on, the pressure-oil flows from the SBV to the hydraulic brake, and when the autonomous traveling controller outputs a stop instruction, the pressure-oil flows from the ABCV to the hydraulic brake.