Abstract: A spindle is provided, comprising a spindle body having a first end, a second end, and a channel extending from the first end to the second end; a first end cover and a second end cover, the first and second end covers being releasably securable to the first and second ends, respectively, for defining a sealed space within the channel; the channel being configured for receiving at least one ball bearing assembly, a shaft, and a fluid; such that the at least one ball bearing assembly, a portion of the shaft, and the fluid are contained within the sealed space when the first and second end covers are secured to the first and second ends.

Abstract: According to embodiments described in the specification, a support spine for a wind turbine blade is provided, comprising an anchor member having a proximal end and a distal end, a transition member extending from the distal end of the anchor member, the transition member having a distal end, and a blade support member extending from the distal end of the transition member. At least a portion of the anchor member can be configured for coupling to a rotor drum. The support spine has a reduced cross-sectional area at the distal end of the transition member than at the distal end of the anchor member. The support spine can support one or more wind turbine blades.

Abstract: A brake assembly for use with a wind turbine. The brake assembly comprises a movable wind flap for attachment to a tail assembly of the wind turbine, the wind flap being configured to assume a first closed position during normal operation, and a second open position when incoming winds exceed a predetermined velocity threshold. Provided on the wind flap is a trip rudder assembly for cooperating with incoming wind to urge the wind flap into the open position. A counterbalance assembly is also provided for biasing the wind flap into the closed position. The wind flap in the open position effects a redirection of a portion of the incoming wind, urging the wind turbine to assume an oblique position relative to the incoming wind, effecting a reduction in rotational velocity of the wind turbine.

Abstract: According to embodiments described in the specification, provided is a rotor drum for use with a multiple-rotor wind turbine, the rotor drum being mountable on a generator shaft of a generator. The rotor drum comprises a plurality of rotors, each rotor being configured to permit a mounting of a plurality of blades. The rotor drum further comprises a plurality of cross straps affixed to the plurality of rotors for maintaining each of the plurality of rotors in a predetermined spaced-apart relationship. The rotor drum is provided with a mounting coupler provided on at least one of the plurality of rotors for affixing the rotor drum on the generator shaft.

Abstract: A curved blade for use on horizontal wind turbines, the blade comprising a substantially semicircular tip portion, a substantially semicircular counter-tip portion opposite the tip portion, and a body portion extending between the tip portion and the counter-tip portion, the body portion being further defined by a concave curved trailing edge and a convex curved leading edge.

Abstract: A brake assembly for use with a wind turbine. The brake assembly comprises a movable wind flap for attachment to a tail assembly of the wind turbine, the wind flap being configured to assume a first closed position during normal operation, and a second open position when incoming winds exceed a predetermined velocity threshold. Provided on the wind flap is a trip rudder assembly for cooperating with incoming wind to urge the wind flap into the open position. A counterbalance assembly is also provided for biasing the wind flap into the closed position. The wind flap in the open position effects a redirection of a portion of the incoming wind, urging the wind turbine to assume an oblique position relative to the incoming wind, effecting a reduction in rotational velocity of the wind turbine.

Abstract: A curved blade for use on horizontal wind turbines, the blade comprising a substantially semicircular tip portion, a substantially semicircular counter-tip portion opposite the tip portion, and a body portion extending between the tip portion and the counter-tip portion, the body portion being further defined by a concave curved trailing edge and a convex curved leading edge.

Abstract: According to embodiments described in the specification, provided is a rotor drum for use with a multiple-rotor wind turbine, the rotor drum being mountable on a generator shaft of a generator. The rotor drum comprises a plurality of rotors, each rotor being configured to permit a mounting of a plurality of blades. The rotor drum further comprises a plurality of cross straps affixed to the plurality of rotors for maintaining each of the plurality of rotors in a predetermined spaced-apart relationship. The rotor drum is provided with a mounting coupler provided on at least one of the plurality of rotors for affixing the rotor drum on the generator shaft.