Turbine with circumferential support and stationary pressure rel
Turboprop overspeed protection system
Universal constant speed variable pitch boat propeller system
Variable pitch fan
Variable pitch marine propeller with shift biasing and synchroni
Variable pitch mounting for airfoil blades of a windmill or prop
Variable pitch propeller
Variable pitch propeller apparatus
Variable pitch propeller control system
Vertical array wind turbine
Vertical axis wind turbine
Vertical axis wind turbine
Vertical axis wind turbine
Vertical axis wind turbine and components therefor
Vertical axis wind turbine for generating usable energy
Vertical axis wind turbines
Vertical axis windmill with multistage feathering of blades and
Vertical axle paddle motor
Vortex wind turbine
Wheel intended to work with a fluid