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. 17, 2018
Filed:
Feb. 07, 2012
Megumu Tsuruta, Tokyo, JP;
Masataka Kawaguchi, Tokyo, JP;
Kensuke Futahashi, Tokyo, JP;
Naohito Hashimoto, Tokyo, JP;
Megumu Tsuruta, Tokyo, JP;
Masataka Kawaguchi, Tokyo, JP;
Kensuke Futahashi, Tokyo, JP;
Naohito Hashimoto, Tokyo, JP;
MITSUBISHI NICHIYU FORKLIFT CO., LTD., Nagaokakyo-shi, Kyoto, JP;
Abstract
A forklift includes a forklift body having a front wheel and a rear wheel, a fork supported to the front of the forklift body so as to be capable of moving vertically via a mast, a lift cylinder capable of moving the fork up and down, a hydraulic pressure supply line capable of supplying hydraulic pressure to a head-side chamber in the lift cylinder, a hydraulic pressure exhaust line capable of exhausting hydraulic pressure from a rod-side chamber in the lift cylinder, and a changeover valve provided on the hydraulic pressure exhaust line, wherein a control device changes a pressure balance between hydraulic pressure on the head-side chamber and hydraulic pressure on the rod-side chamber in the lift cylinder by the changeover valve to restrict the operation of the lift cylinder, when a weight of a load on the fork exceeds a limit load weight.