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:
Jul. 14, 2020
Filed:
Sep. 12, 2017
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Koei Takeda, Tsuchiura, JP;
Shinichi Uotsu, Tsuchiura, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
An electrically-driven mining vehicle includes an obstacle detector, a speed detector, and an alarm. The alarm outputs a first warning, which urges an operator of the electrically-driven mining vehicle to operate a regenerative brake pedal that actuates only the regenerative brake device, and a second warning, which urges the operator to operate a cooperative brake pedal that uses the regenerative brake device and the mechanical brake device in combination. If the travel speed of the vehicle is included in a low speed range in which no difference can be considered to exist in distance between a first braking distance upon actuation of only the regenerative brake device and a second braking distance upon operation of a cooperative braking, a signal for performing the first warning is outputted earlier by at least a warning time interval.