7 Motors and engines for the generation of electricity, not for land vehicles; machine coupling and transmission components not for land vehicles, namely, couplings for machines, transmission belts, transmission gears for machines, generators for wind turbines, blades for the generation of electricity, power transmission shafts for machines, wind-powered electricity generators, windmills, offshore windmills, wind power plants, offshore wind power plants, wind turbines, and structural parts and accessories therefor, not included in other classes, namely, mill towers and masts, blades, blade hubs, mill housings, machine beds, rotation devices, yaw rings and gears; devices for setting the pitch of the wings, brakes and braking devices, main shafts, universal joints, transmission cases, clutches and electric generators and reserve power supply plants electric generators, solar-powered electricity generators, wind-powered electricity generators, hydroelectric generating stations, wind driven electric apparatus, namely, wind turbines, wind/diesel driven electrical energy apparatus for conversion of wind power to electric energy, frequency converters, rotor blades and rotors