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:
May. 09, 2017
Filed:
Sep. 18, 2014
Komatsu Ltd., Tokyo, JP;
Shinji Kaneko, Oyama, JP;
Taishi Oiwa, Naka-gun, JP;
Yoshio Yokouchi, Oyama, JP;
Hideyuki Hiraiwa, Tochigi, JP;
Hiroshi Yamamoto, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A forklift includes a hydraulic pump being a variable displacement pump driven by an engine, a hydraulic motor driven with fluid from the pump, a storage storing first and second groups, and a predetermined lift pressure setting value, the first group including output characteristics each representing relation between a rotational speed of the engine and a torque of the engine for each lift pressures, the second group including output characteristics each representing relation between the rotational speed and the torque for each pump pressures, and determining a greater one of first and second torques as a target torque of the engine, the first torque being calculated from one selected from the first group using the lift pressure setting value or an actual lift pressure and the rotational speed, the second torque being calculated from one selected from the second group using the pump pressure and the rotational speed.