Elevator operating system

Details Elevator operating system Elevator operating system

1983-03-07

1985-03-19

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 502, B66B 1322

Patent

active

045053600

ABSTRACT:
An elevator operating system includes an abnormality detector for detecting an abnormal door opening of an elevator car, a response limiting circuit which is responsive to the detection of the abnormal door opening to limit the response to car calls and floor calls for the elevator car, a re-execution circuit for re-executing the door opening of the elevator car detected as being abnormal, and a releasing circuit for releasing the limitation of the response to the car and floor calls in response to no detection of the abnormal door opening during its re-execution.

REFERENCES:
patent: 3814214 (1974-06-01), Booker, Jr.
patent: 4108281 (1978-08-01), Glaser
patent: 4326606 (1982-04-01), Kuzunuki et al.
patent: 4367810 (1983-01-01), Doane et al.

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