Patent ID: 7948111

Claim:
A vertical axis wind system for use in power generation, the wind system comprising: a stationary base including a generator and an elongate shaft rotatably supported by the base, the elongate shaft extending vertically from a lower end to an upper end and defining a central axis, the elongate shaft operably engaging the generator; at least two arcuate blade assemblies, each arcuate blade assembly having a first end and second end, the first ends being directly attached proximate to a lower end of the elongate shaft and the second ends being directly attached proximate to the upper end of the elongate shaft, the at least two arcuate blade assemblies structured to rotate the elongate shaft in response to aerodynamic forces acting on the at least two arcuate blade assemblies for the generation of power; and a blade attachment assembly being disposed adjacent the lower end and the upper end of the elongate shaft for attaching the at least two blades thereto, the blade attachment assembly including at least two blade attachment brackets being equally spaced about the elongate shaft, axially extending along a portion of the central axis, and radially protruding from the elongate shaft, the at least two arcuate blade assemblies including complementary blade flanges engaging the attachment brackets, wherein the blade attachment brackets include an attachment plate extending from the elongate shaft and an attachment lip attached perpendicular to the attachment plate.