| 摘要 |
Battery charging apparatus, and the battery to be charged, are mounted on the end face of a rotating roll. In one embodiment stationary magnets are mounted adjacent the paths of travel of ferrite rods which carry electrical windings. In another embodiment a hollow torus carrying an electrical winding is mounted concentric of the axis of rotation of the roll and has a freely-falling magnet therein. In another embodiment the torus is replaced by a plurality of hollow elongate carriers each carrying a winding and each having a freely-falling magnet therein.
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