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US 6,540,060 B1Granted
Belt drive assembly for a passenger conveyor
AssigneeOtis Elevator Company
InventorsRichard Fargo, John P. Wesson
Life of this patent
Estimating the term…
Abstract
A passenger conveyor drive belt assembly includes a belt support that facilitates proper engagement between the drive belt and corresponding links of a step chain. The belt support preferably is positioned between a drive sheave and an idle sheave within the loop traveled by the drive belt. The belt support includes at least one moveable support member that moves responsive to movement of the drive belt while urging the drive belt into proper engagement with the step chain links.
Claims12
An assembly for driving a passenger conveyor system, comprising:
- a drive belt that has a cogged surface that is adapted to engage correspondingly configured links of a step chain associated with a plurality of steps, the drive belt forming a loop;
- a drive sheave engaging an inner surface of the drive belt to move the belt around the loop;
- a second sheave spaced from the drive sheave and engaging the inner surface of the drive belt, the second sheave moving with the belt responsive to movement of the drive sheave;
- and
- a belt support positioned between the drive sheave and the second sheave, the belt support having at least one movable support member engaging the inner surface of the belt and maintaining a desired position of the belt in a region near the belt support to ensure a desired engagement between the cogged surface and the links near the belt support.
2 more elements
Dependencies are inferred from the claim text.