Measuring and testing – Fluid flow direction
Reexamination Certificate
2006-02-07
2006-02-07
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid flow direction
Reexamination Certificate
active
06993965
ABSTRACT:
A horizontal axis wind turbine includes: a horizontal plate disposed on upwind side of a rotational central portion of a rotor; a first anemometer disposed at an upper position of upwind side of the horizontal plate; a second anemometer disposed at a lower position of the horizontal plate; and an upflow angle measuring section for measuring an upflow angle based on a wind speed difference or a wind speed ratio obtained from wind speeds measured by the first anemometer and the second anemometer.
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patent: 6531967 (2003-03-01), Djorup
patent: 1 460 266 (2004-09-01), None
Kaijo Corp., “Measurement and Control System Business-Atmospheric Apparatus,” 1 page; Kaijo Corp. http://www.kaijosonic.co.jp/products/kisyo/kisyo—01—e.html.
Folkerts, Luuk et al., “Offshore Wake Measurements Using a Sodar,” EWEA Special Topic Conference on Offshore Wind Energy, Dec. 10, 2001. pp. 1-3, XP001127011.
Mellinghoff, Harald et al., “SODAR Measurements in Complex Terrain,” DEWI Magazine, Aug. 2000, pp. 16-25, No. 17, Deutsches Windenergie Institut, Wilhelmshaven, Germany, XP001116121.
Fuji Jukogyo Kabushiki Kaisha
Jenkins Jermaine
Lefkowitz Edward
Smith Gambrell & Russell
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