Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1988-06-02
1989-04-11
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
B66B 118
Patent
active
048197661
ABSTRACT:
In a group supervisory system for outdoor observatory elevators according to the present invention, idle elevator cages wait at various floors in a functionally and esthetically pleasing pattern. Cages waiting at upper floors for a predetermined time are directed by a predetermined floor-removing circuit to move from the upper floors. The circuit then directs the cages to return to the upper floors. Compensating ropes or travelling cables of stationary cages at high floors may be exposed to air currents long enough to begin swaying back and forth and collide with devices or implements in the shaft. To prevent these collisions from taking place, the group supervisory system periodically directs the cages to move. More specifically, when a cage has waited at the upper floor for a predetermined time, the system registers the cage to a hall call from a lower floor. In response, the cage moves down to a lower floor. Later, the system directs the cage to move back up to the upper floor. The cage moves back up to the upper floor and then resumes waiting.
REFERENCES:
patent: 2836262 (1958-05-01), Hockstein et al.
patent: 3385402 (1968-05-01), Burgy et al.
patent: 4669579 (1987-06-01), Ookubo
Duncanson Jr. W. E.
Mitsubishi Denki & Kabushiki Kaisha
Shoop Jr. William M.
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