Invention Grant
- Patent Title: Braking device
- Patent Title (中): 制动装置
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Application No.: US13640081Application Date: 2010-05-21
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Publication No.: US09120644B2Publication Date: 2015-09-01
- Inventor: Zbigniew Piech , Benjamin J. Watson
- Applicant: Zbigniew Piech , Benjamin J. Watson
- Applicant Address: US CT Farmington
- Assignee: Otis Elevator Company
- Current Assignee: Otis Elevator Company
- Current Assignee Address: US CT Farmington
- Agency: Miller, Matthias & Hull LLP
- International Application: PCT/US2010/035814 WO 20100521
- International Announcement: WO2011/146075 WO 20111124
- Main IPC: B66B1/32
- IPC: B66B1/32

Abstract:
A braking device for an elevator is disclosed. The device may include a motor, a braking system, a first switch, and a second switch. The motor may be capable of generating a counter-electromotive force. The braking system may move to a disengaged position upon being energized and may move to an engaged position upon being de-energized. The first and second switches may have an open state. In the open state, the switches electrically couple the motor to the braking system so that the counter-electromotive force of the motor may energize the braking system.
Public/Granted literature
- US20130025974A1 Braking Device Public/Granted day:2013-01-31
Information query
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