Elevator control apparatus

Details Elevator control apparatus Elevator control apparatus

1977-06-17

1980-06-24

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

Patent

active

042090822

ABSTRACT:
An elevator control apparatus comprises a thyristor power rectifier connected to an AC power source and for driving a DC motor for cage drive; a power stoppage detector for detecting the power stoppage of the AC power source; and a series circuit including a capacitor and switching connected in series with the capacitor. The series circuit is connected across the thyristor power rectifier. Before a cage starts its travel, the capacitor is charged through the thyristor power rectifier, with the polarity which depends on the traveling direction of the cage. At the power stoppage, the capacitor is discharged through the thyristor power rectifier, in response to a switching operation of the switching element.

REFERENCES:
patent: 3611092 (1971-10-01), Willmunder
patent: 3697845 (1972-10-01), Soffer et al.
patent: 3749204 (1973-07-01), Caputo
patent: 3947748 (1976-03-01), Klein
patent: 4058696 (1977-11-01), Antier et al.

Affiliated with

Also associated with

Rating

Elevator control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevator control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1477880