Invention Grant
- Patent Title: Elevator apparatus having independent second brake control
- Patent Title (中): 电梯设备具有独立的第二制动控制
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Application No.: US12064394Application Date: 2006-07-27
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Publication No.: US07938231B2Publication Date: 2011-05-10
- Inventor: Takaharu Ueda , Rikio Kondo , Hiroshi Kigawa
- Applicant: Takaharu Ueda , Rikio Kondo , Hiroshi Kigawa
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- International Application: PCT/JP2006/314888 WO 20060727
- International Announcement: WO2008/012896 WO 20080131
- Main IPC: B66B1/32
- IPC: B66B1/32
Abstract:
In an elevator apparatus, a brake control device has a first brake control portion for operating a brake device upon detection of an abnormality to stop a car as an emergency measure, and a second brake control portion for reducing a braking force of the brake device when a degree of deceleration of the car becomes equal to or higher than a predetermined value at a time of emergency braking operation of the first brake control portion. The second brake control portion detects emergency braking operation of the brake device independently of the first brake control portion.
Public/Granted literature
- US20090255764A1 ELEVATOR DEVICE Public/Granted day:2009-10-15
Information query
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