Transportation apparatus having a moving handrail

Details Transportation apparatus having a moving handrail Transportation apparatus having a moving handrail

1983-09-15

1986-05-20

Valenza, Joseph E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

B66B 2100, B66B 2306

Patent

active

045895392

ABSTRACT:
Transportation apparatus, such as a moving walk or an escalator, having a continuous handrail driven about a closed loop by a handrail drive. The closed loop includes a longitudinal axis, or axes, which divide a load run on which passengers may grasp the handrail, and a return run. The transportation apparatus includes a drive unit which, in addition to driving the transportation apparatus, also drives the handrail drive via a drive chain or belt. The chain or belt is automatically tensioned, notwithstanding wear thereof, or longitudinal positional adjustment of the apparatus drive unit towards either end of the apparatus, by mounting the handrail drive unit such that it is free to move longitudinally, in either direction of the handrail, restrained only by the drive chain or belt.

REFERENCES:
patent: 994879 (1911-06-01), Seeberger
patent: 2885057 (1959-05-01), Hansen
patent: 3666075 (1972-05-01), Iwata
patent: 3707220 (1972-12-01), Boltrek et al.
patent: 3779360 (1973-12-01), Taher et al.
patent: 4200177 (1980-04-01), Sato et al.
patent: 4381851 (1983-05-01), Kraft

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