Patent ID: 8528710

Claim:
An apparatus for non-contact feeding of power by electromagnetic induction, the apparatus comprising: a crossover coil serving as a stationary power transmission coil of a power feeding circuit; and a power receiving coil of a power receiving circuit; and wherein said non-contact feeding of power by electromagnetic induction is from said power transmission coil to said power receiving coil; wherein the power receiving coil is arranged to move relative to the stationary power transmission coil through an air gap, the power receiving coil comprising a flat loop; wherein the crossover coil has an array of a plurality of flat loops elongated in a direction of movement, each one loop of the plurality of flat loops being separated from each other by a crossover, each one loop of the plurality of flat loops of the crossover coil being a unit; and wherein crossovers of the crossover coil effect a reversal of direction of a magnetic field being generated by the units between a plus direction and a minus direction from each one unit to each next unit of the units of the crossover coil.