Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1975-04-18
1977-06-21
Schaefer, Robert K.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 118
Patent
active
040305716
ABSTRACT:
An elevator control system for controlling a plurality of elevator cars arranged for parallel operation for servicing a plurality of service floor landings of a building, in which means are provided so that, in response to origination of a new hall call in addition to hall calls originated and allotted already, a suitable car for servicing this new hall call can be selected and the new hall call can be allotted to the selected car to be serviced by the selected car. In the system, the change in the service condition of all the cars for the already allotted hall calls due to allotment of this new hall call thereto is taken into account in selecting the suitable car. For example, means are provided for computing for each car the forecast waiting time at each of the already allotted floors to be serviced thereby to detect the change in the forecast waiting time when this new hall call originating floor is serviced. The new hall call is allotted to the car which provides a forecast waiting time less than a predetermined limit, and this car services this specific floor.
REFERENCES:
patent: 3443668 (1969-05-01), Hall et al.
patent: 3511342 (1970-05-01), Hall et al.
patent: 3851733 (1974-12-01), Sackin et al.
Iwasaka Tatsuo
Kaneko Takashi
Kinoshita Hiroshi
Yuminaka Takeo
Duncanson Jr. W. E.
Hitachi , Ltd.
Schaefer Robert K.
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