A patent newly published by the USPTO and filed by Apple in June
under the name:
HARNESSING POWER THROUGH ELECTROMAGNETIC INDUCTION UTILIZING PRINTED COILS
Systems for harnessing power through electromagnetic induction utilizing printed coils are provided. A system can include one or more moveable magnets adjacent to printed coils on a circuit. For example, a system can include one or more magnets that are operative to move alongside a circuit board that includes printed coils. The one or more magnets may move, for example, when a user shakes the system or when the user walks or runs while holding the device. The movement of the one or more magnets may create an electromotive force (e.g., a voltage) across the printed coils, and this force may be used to generate electric power.
reveals plans for a battery charging system through which the batteries in Apple devices (iPhone, iPad, etc) could be charged by the movement of a person’s body, thanks to a technology of electromagnetic induction using printed coils. This will allow portable device to build up a charge as a user moves around.