Patent ID: 8319474

Claim:
A noncontact type power feeder system for a mobile object comprising a power feeder arranged along a running road surface for the mobile object, and a power receiver mounted to the mobile object for feeding an electric power between the power feeder and the power receiver which are opposed face-to-face each other, characterized in that: the power feeder is secured on the running road surface for the mobile object, the power feeder is secured at a position where the power receiver is opposed face-to-face to the power feeder with a predetermined gap therebetween when the mobile object is stopped at a position where the power feeder is set up, each of the power feeder and the power receiver is composed of a planar core having long sides extended in a travel direction of the mobile object, the power feeder is fed with an electric power through a power feed line laid underground, either one of the power feeder and the power receiver is movable toward and away from each other, and magnets are mounted to the upper surface of the power feeder which is accommodated in a recess formed in the running road surface and which is supported by resilient springs so that the power feeder is located below the running road surface by its dead weight when the mobile object does not approach the power feeder, but the power feeder is projected above the running road surface by an attraction force effected between the magnet and the mobile object when the mobile object approaches the power feeder.