Elevator door control apparatus

Details Elevator door control apparatus Elevator door control apparatus

1992-09-29

1994-07-12

Stephan, Steven L.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187103, 318284, B66B 1326

Patent

active

053290755

ABSTRACT:
An elevator door control apparatus includes at least one door safety device for detecting whether elevator doors are safe; an elevator control circuit for outputting a door-open/close command; and a door control circuit for controlling the opening/closing of doors on the basis of a door-open/close command issued from the elevator control circuit and for outputting a door reversal request to the elevator control circuit on the basis of the operation signal of the door safety device, wherein the door control circuit outputs a door reversal request to the elevator control circuit upon reception of the operation signal of the door safety device while the doors are being closed on the basis of a door-close command from the elevator control circuit, switches the door speed command pattern to a brake pattern from the door-close command speed pattern and thereafter switches the door speed command pattern from the brake pattern to the door-open command speed pattern when the door-open command is received from the elevator control circuit instead of the door-close command.

REFERENCES:
patent: 4300663 (1981-11-01), Hmelovsky et al.
patent: 4750591 (1988-06-01), Coste et al.
patent: 5137118 (1992-08-01), Iwata

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-397941