Drive system for escalators or moving walkways

Details Drive system for escalators or moving walkways Drive system for escalators or moving walkways

2007-11-20

2007-11-20

Bidwell, James R. (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

C198S334000

Reexamination Certificate

active

10971789

ABSTRACT:
A drive system for escalators having steps or moving walkways having pallets includes at least one drive motor. A drive chain is driven by the drive motor and is comprised of a plate link chain. The drive chain has such a pitch that a maximum of two links are used for each step or pallet. A mechanism for minimizing a polygon effect which occurs during entry and reversing of the chain at a reversing element includes at least one device for actuating one of the drive motor, the reversing elements or the drive chain with a non-constant rotational speed or velocity.

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Klepzig Fachberichte 79 (1971), H 8, pp. 437-439, “Bewegungsprobleme bei grossgliedrigen Kettentrieben”.

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