Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to facilitate passenger entry or exit
Patent
1986-09-03
1987-12-08
Rowland, James L.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
With means to facilitate passenger entry or exit
B65G 1700, B66B 900
Patent
active
047113359
ABSTRACT:
An elevator such as an escalator having a display device presenting, whenever necessary, a display of matters to be noted upon a predetermined special operation (for example, when conveying a wheelchair) while making the display disappear during normal operation of the escalator so as to avoid unsightly appearance. This is also effective in preventing the inadvertent overlooking of the matters displayed. The display device comprises a liquid crystal layer; a pair of electrodes disposed on opposite sides of the liquid crystal layer, one of the electrodes being a transparent pattern electrode having a pattern corresponding to the display of the matters that should be taken note of, the other electrode being a transparent common electrode; and an electric power source for supplying electricity to the electrodes. A switch is operable to shift the escalator between the operation modes and is connected between the electric power source and the electrodes to normally interrupt the electric power supply to the electrodes so that the liquid crystal layer does not display any matters to be noted and also to supply electric power to the electrodes whenever necessary so that the liquid crystal layer displays matters to be noted.
REFERENCES:
patent: 3718382 (1973-02-01), Wysocki et al.
patent: 3944331 (1976-03-01), Janning
patent: 4002404 (1977-01-01), Dir
patent: 4022296 (1977-05-01), Mandel et al.
patent: 4137524 (1979-01-01), Chen et al.
patent: 4326622 (1982-04-01), Ellzey
Mitsubishi Denki & Kabushiki Kaisha
Rowland James L.
Tumm Brian R.
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