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Wave energy converter with internal mass on spring oscillator

  • US 20090085357A1
  • Filed: 10/24/2008
  • Published: 04/02/2009
  • Est. Priority Date: 12/01/2005
  • Status: Active Grant
First Claim
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1. A wave energy converter (WEC) system comprising:

  • a shell responsive to wave motion in a body of water;

    an internal oscillator including a reaction mass and a spring mechanism contained within the shell;

    the spring mechanism including a constant force spring connected between the reaction mass and the shell and an elastic spring also connected between the reaction mass and the shell, said internal oscillator mounted within the shell for moving out of phase relative to the shell, when the shell and the internal oscillator are placed in a body of water subject to wave conditions; and

    a power take-off (PTO) device, located within the shell, coupled between the shell and the internal oscillator for converting their relative motion into electrical energy.

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