Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – By stairway having steps forming an endless member
Patent
1986-03-25
1987-07-28
Valenza, Joseph E.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
By stairway having steps forming an endless member
198324, B66B 2312
Patent
active
046826815
ABSTRACT:
In an escalator, at least one of a plurality of staircase steps connected in an endless manner and supported by a body frame is made for a wheel chair loading staircase step. The staircase step comprises an upwardly movable main tread board, a sub-tread board supported by the main tread board, a lifting mechanism for lifting the main tread board, an electric drive unit for driving the lifting mechanism and a widening mechanism for automatically widening the sub-tread board by means of the electric drive unit.
REFERENCES:
patent: 4557369 (1985-12-01), Ishida et al.
patent: 4569433 (1986-02-01), Ishida et al.
Ogawa Hiroyasu
Ozima Kazuhira
Saito Cyuichi
Teranishi Katsuya
Hitachi , Ltd.
Holmes Jonathan D.
Valenza Joseph E.
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