Patent ID: 7413057

Claim:
A transport system comprising: a transport track comprising: a primary gear rack comprising multiple sections with at least one gap between one or more sections of the primary gear rack; a secondary gear rack comprising multiple sections with at least one gap between one or more sections of the secondary gear rack, with the secondary gear rack having gaps between sections of the secondary gear rack at about locations corresponding to each gap in the primary gear rack; and a platform assembly adapted to move along the transport track, the platform assembly including: a cargo platform; and a pair of drive pinion trucks mounted on opposing sides of the cargo platform, each drive pinion truck comprising a primary drive pinion assembly and a secondary drive pinion assembly with the primary pinion assembly adapted to engage with the primary gear rack and the secondary drive pinion adapted to engage with the secondary gear rack for movement along the transport track, wherein the primary drive pinion assembly and secondary drive pinion assembly are positioned to allow the secondary drive pinion assembly to engage the secondary gear rack at about the location where the primary drive pinion assembly is at about a gap in the primary gear rack.