Moving handrail drive

Details Moving handrail drive Moving handrail drive

1991-09-09

1992-07-21

Valenza, Joseph E.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

Moving hand-support structure

198331, B66B 2322

Patent

active

051315211

ABSTRACT:
A moving handrail on an escalator or the like is driven by pairs of rollers which form a nip through which the handrail moves. The rollers are eccentrically mounted so as to automatically tighten the nip in response to resistance to movement of the handrail. The roller or rollers which contact the underside of the handrail are rotatably driven by power sprockets, while the roller or rollers contacting the outer or exposed surface of the handrail are idler rollers which are not rotated by the power sprockets so as to lessen scuffing of the exposed surface of the handrail by the rollers.

REFERENCES:
patent: 3653484 (1972-04-01), Taylor
patent: 4901839 (1990-02-01), Johnson et al.
patent: 4998613 (1991-03-01), Rivera
patent: 5018616 (1991-04-01), Johnson
patent: 5062520 (1991-11-01), Nguyen et al.

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