Self adjustable escalator handrail drive with balanced drive cha

Details Self adjustable escalator handrail drive with balanced drive cha Self adjustable escalator handrail drive with balanced drive cha

1991-03-15

1992-07-28

Olszewski, Robert P.

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

Moving hand-support structure

B65G 1500

Patent

active

051334437

ABSTRACT:
The handrail drive utilizes one or more pairs of drive chain sprockets and idler sprockets which form a nip over which the drive chain moves. The drive chain and idler sprockets are mounted on rotating drive shafts which in turn are eccentrically mounted in rotatable bushings. The drive rollers will automatically tighten on the handrail as friction increases between the rollers and handrail due to increased resistance to movement of the handrail. The rotatable bushings on each drive sprocket and its associated idler sprocket are connected together to ensure that chain tension equalizes between each drive and idler sprocket so that no drive chain slack will occur.

REFERENCES:
patent: 3414109 (1968-12-01), Clark
patent: 3653484 (1972-04-01), Taylor
patent: 3666075 (1972-05-01), Iwata
patent: 3712447 (1973-01-01), Boltrek et al.
patent: 3779360 (1973-12-01), Taher et al.
patent: 4134883 (1979-01-01), Mendelsohn
patent: 4200177 (1980-04-01), Sato et al.
patent: 4589539 (1986-05-01), Boltrek et al.
patent: 4674619 (1987-06-01), Nakazawa et al.
patent: 4875569 (1989-10-01), Hermann et al.
patent: 4895240 (1990-01-01), Bruehl et al.
patent: 4901839 (1990-02-01), Johnson et al.
patent: 4998613 (1991-03-01), Rivera et al.
patent: 5018616 (1991-05-01), Johnson et al.

Affiliated with

Also associated with

Rating

Self adjustable escalator handrail drive with balanced drive cha does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self adjustable escalator handrail drive with balanced drive cha, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self adjustable escalator handrail drive with balanced drive cha will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1682902