Invention Grant
- Patent Title: Forklift
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Application No.: US14347971Application Date: 2012-02-07
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Publication No.: US10023451B2Publication Date: 2018-07-17
- Inventor: Megumu Tsuruta , Masataka Kawaguchi , Kensuke Futahashi , Naohito Hashimoto
- Applicant: Megumu Tsuruta , Masataka Kawaguchi , Kensuke Futahashi , Naohito Hashimoto
- Applicant Address: JP Nagaokakyo-shi, Kyoto
- Assignee: MITSUBISHI NICHIYU FORKLIFT CO., LTD.
- Current Assignee: MITSUBISHI NICHIYU FORKLIFT CO., LTD.
- Current Assignee Address: JP Nagaokakyo-shi, Kyoto
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-211245 20110927
- International Application: PCT/JP2012/052753 WO 20120207
- International Announcement: WO2013/046738 WO 20130404
- Main IPC: B66F17/00
- IPC: B66F17/00 ; B66F9/07 ; B66F9/08 ; B66F9/22

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.
Public/Granted literature
- US20140241840A1 FORKLIFT Public/Granted day:2014-08-28
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