Patent ID: 9500180
Filing Date: 2016-11-22
CPC Classification: F03D,Y02E

Claim Text:
1. A fan blade assembly suitable for use in a fan or wind turbine, comprising: a. a central cylinder, suitable for receiving a shaft and defining a central axis of rotation of the fan blade assembly; b. a plurality of single arms or single-bladed fins projecting from the central cylinder, said single arms or single-bladed fins substantially equidistant from each other, said single arms or single-bladed fins further having a first end and a second end, said first ends attached to said central cylinder, each second end attached to a substantially semi-cylindrical element, said semi-cylindrical element comprising a curved surface with an inner face and an outer face, said second end of said single arms or single-bladed fins attached to the outer face of said curved surface of said semi-cylindrical element; c. a plurality of paired arms or double-bladed fins having a first paired arm and a second paired arm, each paired arm or blade of the double-bladed fins having a first and a second end wherein the first end of each paired arm or blade is connected to a second cylinder to form an angle of approximately 15° to approximately 135° from each other and wherein said second cylinders are sized to fit into said semi-cylindrical elements and wherein each paired arm or blade of the double-bladed fins extends substantially radially outwardly relative to the central axis from where they are connected to the second cylinders are attached at the periphery of the fan blade assembly.