Elevator control apparatus

Details Elevator control apparatus Elevator control apparatus

1989-06-12

1990-12-04

Leung, Philip H.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 132

Patent

active

049747037

ABSTRACT:
An elevator cage control apparatus includes a brake coil energized and deenergized by start and stop command signals to move and restrain the cage, respectively. A current detector detects current flowing through the brake coil. A counter counts a time interval beginning at generation of the stop command signal and ending when current in the brake control gradually decreasing increases instantaneously and a time interval beginning at generation of the start command signal and ending when current in the brake coil gradually increasing decreases instantaneously. A memory stores the counted time intervals. A drive command issuer commands a motor driving circuit to stop and start the cage, after the counted time intervals stored in the memory have lapsed, respectively.

REFERENCES:
patent: 4340131 (1982-07-01), Eriksson
patent: 4368501 (1983-01-01), Gingrich
patent: 4739969 (1988-04-01), Eckersley 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-878423