SECONDARY POSITIONING SYSTEM FOR ELVATOR CAR DOOR SYSTEM

PROBLEM TO BE SOLVED: To provide a secondary positioning system for an elevator car door whereby it is confirmed that the door is completely opened or closed. SOLUTION: This system has three sensors each of which is positioned at each opening formed at a door hanger. The sensors are separately arran...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	THOMPSON GARNETT, GENTZER DAVID K, TRACEY MICHAEL J, MURAH BENNI, TOWEY JAMES P JR, FARGO RICHARD N
Format:	Patent
Sprache:	eng
Schlagworte:	ELEVATORS ESCALATORS OR MOVING WALKWAYS HAULING HOISTING LIFTING PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a secondary positioning system for an elevator car door whereby it is confirmed that the door is completely opened or closed. SOLUTION: This system has three sensors each of which is positioned at each opening formed at a door hanger. The sensors are separately arranged at a specified interval and the interval between the respective opening in the door hanger is set at a specified value, and accordigly it is possible to determine the full close and open conditions of elevator car door, intermediate position therebetween, and moving direction.