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Method and apparatus for motional/vibrational energy harvesting via electromagnetic induction

  • US 8,729,747 B2
  • Filed: 08/02/2010
  • Issued: 05/20/2014
  • Est. Priority Date: 02/01/2008
  • Status: Active Grant
First Claim
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1. A device, comprising:

  • a magnet;

    a spheroidal housing having a hollow interior; and

    at least one coil positioned such that as the magnet moves within the hollow interior of the spheroidal housing, a corresponding at least one electric current is induced in the at least one coil, wherein the magnet is allowed to experience translational and rotational movement in any direction throughout the hollow interior of the spheroidal housing, wherein the diameter ratio of a diameter of the magnet and a diameter of the housing is in the range 0.375-0.75 or in the range 0.3-0.7.

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