Invention Grant
- Patent Title: Backhoe loader
- Patent Title (中): 挖掘装载机
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Application No.: US13817204Application Date: 2012-04-18
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Publication No.: US08483917B2Publication Date: 2013-07-09
- Inventor: Hiroaki Takeshima , Yoshito Komatsu
- Applicant: Hiroaki Takeshima , Yoshito Komatsu
- Applicant Address: JP Tokyo
- Assignee: Komatsu Ltd.
- Current Assignee: Komatsu Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP2011-172751 20110808
- International Application: PCT/JP2012/060456 WO 20120418
- International Announcement: WO2013/021692 WO 20130214
- Main IPC: G06F7/70
- IPC: G06F7/70

Abstract:
A backhoe loader includes: a transmission; a cab including an operator's seat allowed to be forwardly and backwardly oriented; a loader disposed forwards of the cab; a backhoe disposed rearwards of the cab; a hydraulic pump configured to supply an operating oil to a hydraulic clutch; a hydraulic circuit including a relief valve for setting an intra-circuit hydraulic pressure to be a first hydraulic pressure; a work mode determining unit configured to determine whether or not an operating mode is a backhoe work mode using the backhoe; and a relief valve controlling unit. The relief valve controlling unit is configured to control a relief pressure of the relief valve at a second hydraulic pressure lower than the first hydraulic pressure when the work mode determining unit determines that the operating mode is the backhoe work mode.
Public/Granted literature
- US20130144496A1 BACKHOE LOADER Public/Granted day:2013-06-06
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