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:
Jan. 31, 2017
Filed:
Jun. 03, 2013
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Hidekazu Moriki, Tokyo, JP;
Satoru Kaneko, Tokyo, JP;
Noritaka Itou, Tsuchiura, JP;
Kazuo Ishida, Tsuchiura, JP;
Toshio Kotaka, Tsuchiura, JP;
Satoshi Sekino, Tsuchiura, JP;
Toru Kikuchi, Tsuchiura, JP;
Masaki Higurashi, Tsuchiura, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
This invention includes a hydraulic pump (), a working implement () having a lift cylinder () driven by a hydraulic fluid supplied from the hydraulic pump (), an operating device () for operating the working implement (), a traveling motor () for driving wheels, and a main controller (). When the lift cylinder () fails to operate despite an extending instruction being imparted to the lift cylinder () via the operating device (), the main controller () reduces a limit value for an increase rate of a torque required in the traveling motor () to a value smaller than that applied when the lift cylinder () operates. With this configuration, occurrence of wheel slip during lifting of an object to be carried can be reduced.