Patent ID: 6540060
Filing Date: 2003-04-01
Classification: B66B,F16H

Abstract:
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.