| CPC B65G 1/0492 (2013.01) [B07C 3/082 (2013.01); B07C 5/36 (2013.01); B65G 1/065 (2013.01); B65G 1/1373 (2013.01)] | 12 Claims |

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1. A material handling method for delivering items to a plurality of destinations, comprising the steps of:
loading an item onto a vehicle;
driving the vehicle with the item to one of the destinations, comprising the steps of:
driving a first drive element along a first track having a plurality of first engagement elements; and
driving a second drive element along a second track having a plurality of second engagement elements, wherein the second track is spaced apart from the first track;
disengaging the first drive element from the first engagement elements while engaging the second engagement element with the second drive elements to allow the first drive elements to slide along the first track; and
engaging the first drive element with the first engagement elements to drive the vehicle along the first track after the step of disengaging.
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