Patent ID: 9385019
Filing Date: 2016-07-05
CPC Classification: B65G,H01L

Claim Text:
1. A material handling system, comprising: an overhead rack defining a plurality of storage positions, wherein the overhead rack defines at least one interior window devoid of storage locations and at least one periphery window along an edge of the overhead rack; first and second side rails disposed above the overhead rack; a first cross rail movably coupled to the first and second side rails to allow movement of the first cross rail in a first direction along the first and second side rails; a first transport vehicle movably coupled to the first cross rail and operable to move in a second direction perpendicular to the first direction along the first cross rail and to descend below the overhead rack through the at least one interior window or the at least one periphery window; a first tool disposed below the overhead rack and having a first load port accessible by the first transport vehicle through the at least one interior window; and a second tool disposed below the overhead rack and having a second load port accessible by the first transport vehicle through the at least one periphery window.