Door control device of elevator

Details Door control device of elevator Door control device of elevator

2006-08-22

2006-08-22

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

C049S028000

Reexamination Certificate

active

07093692

ABSTRACT:
An elevator door control device includes an obstruction sensor adapted to detect an obstruction in the vicinity of any one of the vertical frames of the doorway frame and to output an obstruction detection signal, and a door control unit for controlling door opening operation and door closing operation of a car door and a landing door in response to the obstruction detection signal. The obstruction sensor has light emitters provided on the vertical frames of the doorway frame and light receivers provided on the upper frame of the doorway frame. The light emitters are provided in the vicinity of the lower ends of the vertical frames and emit detection lights substantially along the vertical frames. The light receivers are provided on the lower surface of the upper frame and receive the detection lights.

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