Patent ID: 7635053

Claim:
A transport system, comprising: (a) an underfloor high frequency alternate current primary conductor for providing an electromagnetic field extending along said primary conductor for inductive energy transfer; (b) at least one electric transport vehicle comprising: (b-1) two individually controllable and individually drivable drive wheels; (b-2) at least one pick-up unit with a secondary conductor for said inductive energy transfer, said pick-up unit being pivotable relative to said vehicle and comprising at least one idle roller adapted for being continuously contacted with a travel surface; (b-3) a sensor unit adapted for sensing continuously a floor track signal; and (b-4) a control unit which controls said two drive wheels in response to signals of said sensor unit for minimizing a deviation of said vehicle from said floor track signal; and wherein said two drive wheels are arranged at a suitable distance in a driving direction behind the axis around which the pick-up unit is pivotable for maintaining said pick-up unit essentially within said electromagnetic field during travel for a maximum of said energy transfer.