Ocean wave energy converter with multiple capture modes
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United States of America Patent
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Dec 10, 2013
Grant Date -
Feb 9, 2012
app pub date -
Sep 2, 2011
filing date -
May 27, 2009
priority date (Note) -
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Abstract
An ocean wave energy converter utilizes a substantially submerged elongated absorption barrier oriented parallel to oncoming wave fronts having one or more substantially submerged air or gas filled variable volume vessels located between a relatively fixed position rigid rearward surface and a moving rigid wave front facing surface. Said vessel(s) are compressed by oncoming overhead wave crests both by increased hydrostatic pressure and wave kinetic impact, thereby capturing both wave potential energy (hydrostatic or heave) and kinetic (impact or surge) energy. Vessel compression is resisted by hydraulic, pneumatic, mechanical or linear electric generation means. Vessel re-expansion, when wave troughs are overhead, utilize hydraulic, pneumatic, electric, and/or mechanical (gravity mass or spring) means. Wave energy capture is enhanced by venting vessel air or gas directly to and from atmosphere or low pressure surface expandable vessel(s), which venting may also drive pneumatic turbine-generators, and by oncoming wave shoaling and focusing means.
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