| 摘要 |
Modular conveyor units are described as including a movable, continuous, spiral conveyor surface mounted on a frame. Spiral conveyors are constructed by stacking one or more of the modular units one atop the other depending upon the height of the spiral conveyor to be constructed, the conveyor surface of each modular unit forming a segment of the thus assembled spiral conveyor. The conveyor surfaces of all modular conveyor units are driven in the same direction to pass articles carried thereon from one unit to the next in the direction in which driven.
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