Patent ID: 7614850

Claim:
A wind turbine generator comprising: at least one wind turbine blade; and a hub assembly comprising: a substantially cylindrical wall defining a hub cavity; at least one substantially triangular frame inserted into said hub cavity, wherein said at least one substantially triangular frame comprises a plurality of flange plates fixedly coupled to said cylindrical wall, said plurality of flange plates defining, but not extending into, at least one passage, said plurality of flange plates comprising: a plurality of blade flange plates coupled to said cylindrical wall; a front flange plate coupled to said cylindrical wall; a rear flange plate coupled to said cylindrical wall; and a plurality of support plates coupled to said cylindrical wall, said plurality of blade flange plates, said front flange plate, and said rear flange plate; at least one blade attachment apparatus comprising at least one blade support sleeve fixedly coupled to at least a portion of said cylindrical wall, said at least one blade support sleeve configured to receive at least a portion of said wind turbine blade; and a blade pitch bearing comprising a blade portion and a hub portion that is slidingly coupled to said blade portion.