Safety apparatus for elevator

Details Safety apparatus for elevator Safety apparatus for elevator

1984-06-12

1985-05-28

Dobeck, B.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

318453, B66B 506

Patent

active

045194793

ABSTRACT:
In an elevator having a converter which changes an A.C. output from an A.C. power source into a D.C. output, an inverter which changes the D.C. output of the converter into an A.C. output, a current detector which detects an output current of the inverter, and an inverter controller which controls the inverter on the basis of the detected current value of the current detector and a command current value, a hoist motor being driven by the A.C. output of the inverter; the operation of the inverter being stopped when a difference between the detected current value and command current value of the current detector for detecting the output current of the inverter exceeds a preset value. Accordingly, a current detector for detecting current flowing through the inverter is dispensed with, to realize a simple arrangement and a low cost.

REFERENCES:
patent: 3961688 (1976-06-01), Maynard
patent: 4378059 (1983-03-01), Hatakeyama et al.
patent: 4394607 (1983-07-01), Lemirande

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-864169