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US20080191485: Wave Power Energy Generation Apparatus

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Filing Information

Inventor(s) Trevor John Whittaker · Allan Robert Thomson · Michael David Crowley ·
Assignee(s) WHITTAKER TREVOR JOHN · THOMSON ALLAN ROBERT · CROWLEY MICHAEL DAVID ·
Correspondent GIFFORD, KRASS, SPRINKLE,ANDERSON & CITKOWSKI, P.C ·
Application Number US11909519
Filing date 03/15/2006
PCT 371 date 09/24/2007
Publication date 08/14/2008
Predicted expiration date 03/15/2026
U.S. Classifications 290/53  ·
International Classifications F03B1318  ·
Kind CodeA1
PCT Application Number WO20PCTGB2006000906 - 03/15/2006
Foreign Priority GB0505906.8 - 03/23/2005 ·
30 Claims, 7 Drawings


Abstract

The present invention relates to a wave energy conversion device (1), for use in relatively shallow water, which has a base portion (2) for anchoring to the bed of a body of water (6) and an upstanding flap portion (8) pivotally connected (12) to the base portion. The flap portion is biased to the vertical and oscillates, backwards and forwards about the vertical in response to wave motion acting on its faces. Power extraction means extract energy from the movement of the flap portion. When the base portion (2) is anchored to the bed of a body of water (6) with the flap portion (8) facing the wave motion, the base portion (2) and the flap portion (8) extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed. A plurality of devices can be interconnected to form one system. The distance between the plurality of flaps is dependent on the wavelength.

Independent Claims | See all claims (30)

  1. 1. A wave energy conversion device, for use in relatively shallow water, comprising: a base portion formed and arranged for anchoring to the bed of a body of water in use of the device; an upstanding flap portion pivotally connected to said base portion, said flap portion being formed and arranged to oscillate, in use, backwards and forwards about the vertical in response to wave motion acting on faces of the flap portion; and power extraction means for extracting energy from the movement of the flap portion; characterised in that said device is formed and arranged so that when the base portion is anchored to the bed of a body of water with the flap portion facing the wave motion, the base portion and the flap portion extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed, and said flap portion is sufficiently buoyant in water so as to be biased to the vertical in use.
  2. 17. (canceled)
  3. 26. An energy generating system comprising a plurality of wave energy conversion devices interconnected with each other, each said device comprising: a base portion formed and arranged for anchoring to the bed of a body of water in use of the device; an upstanding flap portion pivotally connected to said base portion, said flap portion being formed and arranged to oscillate in use, backwards and forwards about the vertical in response to wave motion acting on faces of the flap portion; and power extraction means for extracting energy from the movement of the flap portion; characterized in that said device is formed and arranged so that when the base portion is anchored to the bed of a body of water with the flap portion facing the wave motion, the base portion and the flap portion extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed, and said flap portion is sufficiently buoyant in water so as to be biased to the vertical in use.
  4. 28. A method for extracting energy from waves comprising the steps of: providing a wave energy conversion device comprising: a base portion formed and arranged for anchoring to the bed of a body of water in use of the device; an upstanding flap portion pivotally connected to said base portion, said flap portion being formed and arranged to oscillate, in use, backwards and forwards about the vertical in response to wave motion acting on faces of the flap portion; and power extraction means for extracting energy from the movement of the flap portion; characterized in that said device is formed and arranged so that when the base portion is anchored to the bed of a body of water with the flap portion facing the wave motion, the base portion and the flap portion extend vertically through at least the entire depth of the water, to present a substantially continuous surface to the wave motion throughout the full depth of water from the wave crest to the sea bed, and said flap portion is sufficiently buoyant in water so as to be biased to the vertical in use; locating said device on the bed of a body of water, with its flap portion facing the direction of waves; and extracting wave energy from the waves in a said body of water.

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