Wind driven rotors are affixed along the length of a flexible power shaft, and the shaft is suspended at a great height above the earth by means of a swivel. The lowermost end of the shaft is connected to rotate a ground supported energy conversion device. The winds aloft impart rotational motion into...http://www.google.com/patents/US4084102?utm_source=gb-gplus-sharePatent US4084102 - Wind driven, high altitude power apparatus
