发明授权
US4982815A Elevator apparatus 失效
电梯设备

Elevator apparatus
摘要:
An elevator apparatus includes an electric motor for driving the elevator apparatus, an elevator cage adapted to be lifted or lowered by the electric motor, a brake device for holding and retaining an elevator driving system, including the electric motor, and a malfunction detecting device responsive to the application of a torque to a retainer section of the brake device during the lifting or lowering of the elevator cage.
公开/授权文献
信息查询
0/0