Abstract: A horizontal axis wind turbine is designed to operate under low wind velocities. It includes a substantially horizontal turntable frame mounted for rotation on a vertical pivot, a pair of laterally spaced vertical support legs fixed to and extending upwardly from the turntable frame and, a horizontal, rotatable shaft extending across between and horizontally journaled to the upper ends of the vertical support legs. A wind rotor is fixed to the rotatable shaft and includes at least four pairs of oppositely disposed arms radiating outwardly from the rotatable shaft with one or two concave surfaced wind catching bucket mounted across between each pair of arms. Each bucket is spaced outwardly along the arms at a distance at least twice the width of the bucket, and a wind direction vane is connected to the turntable frame for directing the wind rotor normal to the oncoming wind.

Abstract: A wind impeller that includes at least two rotor assemblies mounted to a base for rotation. Each rotor assembly has a plurality of spaced arms extending radially from a rotation axis with a vane attached at the end of each arm. The at least two rotor assemblies are mounted such that the rotors are rotatable through a first region in which the arms of the rotor assemblies converge and intermesh to travel along the same path and a second region in which the arms of the rotor assemblies diverge to travel along separate paths. A baffle plate is mounted to the base for directing wind against the vanes when in the second region to maximize the effective driving force of the wind.