Elevator level control system using elevator/landing gap as a re

Details Elevator level control system using elevator/landing gap as a re Elevator level control system using elevator/landing gap as a re

1994-12-16

1997-08-19

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

187394, B66B 134, B66B 300

Patent

active

056591594

ABSTRACT:
An emitter and a plurality of sensors and are used to detect the relative positions between an elevator platform and landing sill. The emitters radiate energy through a reflection duct formed between the elevator platform and the landing sill. The plurality of sensors monitor the reflection duct so that radiated energy is detected. The sensors provide level signals in response to the radiated energy. A means responsive to the level signals determines when the platform is level with respect to the landing sill.

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