Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1976-11-01
1979-04-17
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
041496132
ABSTRACT:
An elevator control system for controlling a plurality of elevator cars servicing a plurality of floors of a building by allotting a hall call originated from one of the floors to a suitable one of the elevator cars so that the hall call can be serviced by the selected elevator car. In the elevator control system, a scan signal generator is provided to generate a scan signal which is used to sequentially scan the floors in successive scan slots for detecting hall calls and elevator car service positions and converting the detected information into pulse signals. The elevator control system comprises counters for counting up the service loads of the individual elevator cars in the successive scan slots after the detection of the elevator car service positions, so that, when a hall call is detected in one of the scan slots, an elevator car providing a minimum service load at the specific scan slot can be selected, and the detected hall call can be allotted to the selected elevator car. The elevator control system of such construction may be divided into a plurality of blocks classified by their control functions. These blocks are electrically isolated from one another by isolating means which permits transmission of signals among them. In a modification, the scan signal generator may be provided in each of the blocks.
REFERENCES:
patent: 3739880 (1973-06-01), Robaszkiewicz
patent: 3851733 (1974-12-01), Sackin et al.
patent: 3851734 (1974-12-01), Sackin
patent: 4046228 (1977-09-01), Powell
Nakazato Masao
Yoneda Kenji
Yuminaka Takeo
Duncanson Jr. W. E.
Hitachi , Ltd.
Schaefer Robert K.
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