Apparatus for detecting abnormalities in elevator motion

Details Apparatus for detecting abnormalities in elevator motion Apparatus for detecting abnormalities in elevator motion

1990-11-19

1992-08-18

Pellinen, A. D.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 300

Patent

active

051391139

ABSTRACT:
The elevator control apparatus of the present invention comprises a plurality of drive control apparatus that control the driving of various motions of the elevator, a signal mutual transmission device for connecting the plurality of the drive control apparatus and for transmitting signals among them, and a plurality of abnormality judgment devices, disposed on each of the plurality of the drive control apparatus, that monitor the motions of the elevator controlled by the plurality of the drive control apparatus by transmitting sigals among them via the signal mutual transmission device, each one of the plurality of the abnormality judgment devices individually judging the abnormality of the same motion.

REFERENCES:
patent: 3973648 (1976-08-01), Hummert et al.
patent: 4101007 (1978-07-01), Magee
patent: 4367810 (1983-01-01), Doane et al.
patent: 4542479 (1985-09-01), Kamimura et al.
patent: 4930604 (1990-06-01), Schienda et al.

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