Invention Grant
US07690483B2 Elevator including elevator rescue system 有权
电梯包括电梯救援系统

Elevator including elevator rescue system
Abstract:
Elevator comprising a car, a drive motor driving the car, a motor drive unit for controlling the drive motor and supplying power thereto, an encoder for sensing movement of the car, and an elevator rescue system for rescue operation in case of an emergency situation, wherein the elevator comprises one single encoder only for normal and rescue operation.
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