Patent ID: 6644213
Filing Date: 2003-11-11
Classification: A47B,B61B

Abstract:
A carriage for a mobile storage system, comprising:a frame; one or more storage members mounted to the frame; a plurality of mobile supports interconnected with the frame, including first and second end mobile supports and a series of intermediate mobile supports located between the first and second end mobile supports; and a drive arrangement, comprising a power source, a drive shaft driven by the power source, and a pair of drive units arranged symmetrically relative to a center of the frame and drivingly interconnected with the drive shaft, wherein each drive unit is engaged with one of the intermediate mobile supports inwardly of one of the first and second end mobile supports; wherein each drive unit comprises a pair of rollers, an input drive sprocket connected to the drive shaft, a driven sprocket interconnected with each roller, and a drive chain, wherein the drive chain includes a first section that extends in a first direction from the input drive sprocket toward a first one of the driven sprockets for engagement with the first driven sprocket, and a second section that extends in a second direction opposite the first direction from the input drive sprocket toward a second one of the driven sprockets for engagement with the second drive sprocket.