Patent ID: 9528498
Filing Date: 2016-12-27
CPC Classification: F03D,F05B,H02K,H02P,H02S,Y02E,Y02P

Claim Text:
1. A wind turbine, comprising: a frame structure; a rotary airfoil assembly supported by said frame structure, said rotary airfoil assembly including helical swept airfoils and that rotate to capture wind throughout a circumference of the rotary airfoil assembly from both windward and leeward sides; permanent magnet disc means for levitating static weight of an entirety of the rotary airfoil assembly via magnetic repulsion, said permanent magnet disc means including double opposing conical needle bearings separated from each other by a toothed ring that all together provide a hall effect and including a velocity sensor that senses a magnetic field from the permanent magnet disc means for electronic inductive pickup and to measure current from which the velocity of the rotation of the helical swept airfoils can be determined; hub means for affixing said permanent magnet disc means within said frame structure in a manner that counteracts both a coefficient of friction (“COF”) associated with rotation of the rotary airfoil assembly and ensuing bearing wear imparted from the rotary airfoil assembly, and electricity generating means for generating electricity in response to rotation of the helical swept airfoils.