Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1986-11-21
1988-02-16
Shoop, Jr., William M.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187121, B66B 146
Patent
active
047249315
ABSTRACT:
An elevator group-supervisory apparatus in which elevator group-supervisory means is fed through read means with elevator status signals, for example, hall call, cage call and direction signals derived from the display equipment of an existing elevator such as a hall call response lamp, cage call response lamp, door opening or closing button and cage position indicating lamp that are standardized irrespective of differences in the date of manufacture and the manufacturer of the existing elevator, and manipulation signals that are the processed results of the group-supervisory means are delivered to the manipulation equipment of the existing elevator so as to control the control circuit of the existing elevator. Therefore, even when the control circuit of the existing elevator has been made by any manufacturer different from the manufacturer of the elevator group-supervisory apparatus or when the existing elevator is of a model in a different year, the control circuit for receiving group-supervisory commands need not be remodeled, and the group supervision of the elevator can be readily altered.
REFERENCES:
patent: 4128143 (1978-12-01), Petterson et al.
patent: 4193478 (1980-03-01), Keller et al.
patent: 4376930 (1983-03-01), Sasao
Duncanson Jr. W. E.
Mitsubishi Denki & Kabushiki Kaisha
Shoop Jr. William M.
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