7 Wind-powered machines; turbines, in particular wind turbines (except for land vehicles); parts and accessories (included in this class) for such wind-powered machines, in particular rotor blades, rotor consoles, blade hubs, machine housings, yaw rings, yaw gears, brakes, main drive shafts, universal joints, gears, gear boxes, couplings, motors, mechanical rotor adjusters, electric generators and emergency power generators