A vertical axis windmill includes a generator, a shaft mounted to the generator, and a plurality of blade sets.  The blade set includes a blade rod rotatably connected to the shaft and carrying blades arranged on opposite sides of the shaft.  Each blade is divided into first and second moment-inducing sections locat...

A vertical axis wind turbine with wingletted cam-tiltable blades is provided, including: a generator, a shaft interconnected with the generator, and a plurality of blade sets coupled to the shaft.  Cam members are provided inside the shaft and have guide sections of pre-determined shapes.  The blade set includes bla...