Drive device for escalators or moving walkways

Details Drive device for escalators or moving walkways Drive device for escalators or moving walkways

2005-04-05

2005-04-05

Lillis, Eileen D. (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

Reexamination Certificate

active

06874613

ABSTRACT:
A device for driving step of an escalator or pallets of a moving walkway. A chain wheel has a chain wheel drive shaft and is coupled to the steps or pallets. The device includes a driving gear for being coupled to the chain wheel drive shaft. The device also includes at least one driving motor coupled to the driving gear. The driving gear includes first and second gears coupled to the chain wheel drive shaft. The first and second gears each have variable reference diameters.

REFERENCES:
patent: 4775044 (1988-10-01), Höfling
patent: 5224580 (1993-07-01), Nurnberg et al.
patent: 6351096 (2002-02-01), Jang
patent: 6450317 (2002-09-01), Fargo et al.
patent: 6637579 (2003-10-01), Pietz
patent: 6640959 (2003-11-01), Haumann et al.
patent: 100 20 787 (2001-01-01), None
patent: 199 36 742 (2001-02-01), None
patent: 199 52 168 (2001-05-01), None
patent: 2 243 430 (1991-10-01), None
Abstract for DE 19936742.

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