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US 2004/0105754 A1Published application
Darius windmill
AssigneeSatsuki Seisakusho Co., Ltd.
InventorKentaro Takahashi
Life of this patent
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Abstract
A Darius windmill comprises a rotor having a plurality of blades around a vertical rotating shaft. Each of the blades is in the form of a bag of which the rear end portion with respect to the rotating direction thereof is cut to form an opening. The blade has a fixed uniform cross section along the vertical rotating shaft.
Claims2
A Darius windmill comprising a rotor having a plurality of blades around a vertical rotating shaft, wherein:
- each said blade is in the form of a bag of which the rear end portion with respect to the rotating direction thereof is cut to form an opening and which has a fixed uniform cross section along the vertical rotating shaft.
Dependencies are inferred from the claim text.