Control apparatus for elevator system

Details Control apparatus for elevator system Control apparatus for elevator system

1979-05-08

1981-04-28

Witkowski, S. J.

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

Patent

active

042639875

ABSTRACT:
A control apparatus for elevator system comprises a direction command device which outputs an ascending command signal or a descending command signal for a cage of an elevator; a driving signal generating device which outputs an ascending driving signal or a descending driving signal depending upon a driving direction of the cage of the elevator and a driving distance; and a detecting comparator which detects the ascending driving signal during non-output of the ascending command signal, and detects the descending driving signal during non-output of the descending command signal and outputs a command signal when the ascending driving signal or the descending driving signal is increased over a predetermined value.

REFERENCES:
patent: 4068741 (1978-01-01), Ficheux et al.
patent: 4101007 (1978-07-01), Magee
patent: 4114731 (1978-09-01), Faup et al.
patent: 4128142 (1978-12-01), Satoh et al.

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