Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1981-07-06
1983-04-12
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
B66B 502
Patent
active
043794998
ABSTRACT:
A multi-elevator system operable in response to a group controller (FIG. 1) operates in a first phase (FIG. 9) in which each car is selected in a sequence to be run in a first phase (FIG. 4) in which each car is commanded to run to a designated landing (FIGS. 5 and 6). When an attempt has been made to recover all cars (30, FIG. 9; 22, FIG. 8), a second attempt is made, if necessary (28, FIG. 9; 11, 13, 15, FIG. 8). Then, in a second phase, cars are selected on a priority basis in which the highest level are cars with firemen in them or cars not at a designated landing (8, FIG. 10). A second priority level includes cars designated as preferred by the customer (22, FIG. 10) and a third level includes any available car (29, FIG. 10). Any car not recovered is caused to become available (10, FIG. 3) for selection (8, FIG. 10) on a periodic basis, the priority level section automatically deselecting one of the service cars for operation so as to permit selecting the unrecovered car for operation.
REFERENCES:
patent: 2968364 (1961-01-01), Robertson
patent: 3506095 (1970-04-01), Weaver
patent: 3706357 (1972-12-01), Simpson
Dobeck B.
Duncanson Jr. W. E.
Otis Elevator Company
Williams M. P.
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