Wind turbine assemblies and slip ring assemblies for wind blade pitch control motors

A wind turbine assembly, comprising:

• a nacelle housing a wind driven generator or alternator mounted onto a tower;
• at least one wind driven blade operatively coupled to the wind driven generator or alternator;
• and
• a slip ring assembly disposed within the nacelle for controlling pitch of the at least one wind driven blade, the slip ring assembly comprising a rotating portion and a stationary portion, wherein the rotating portion comprises a series of grooves for receiving a spring loaded electrical contact disposed about an outer perimeter of the slip ring rotating portion, each one of the grooves comprising a first planar surface intersecting with a second planar surface and a concavely rounded bottom portion at the intersection of the first and planar surfaces.

A wind turbine assembly, comprising:

• a nacelle housing a wind driven generator or alternator mounted onto a tower;
• at least one wind driven blade operatively coupled to the wind driven generator or alternator;
• and
• a slip ring assembly disposed within the nacelle and configured for controlling the pitch of the at least one wind driven blade, the slip ring assembly comprising a rotating portion and a stationary portion, wherein the rotating portion comprises a series of grooves for receiving a spring loaded electrical contact disposed about an outer perimeter of the slip ring rotating portion, wherein the rotating portion is formed of bronze and further comprises a graphite coating thereon.