The invention is to provide a vibration wave driving apparatus for obtaining driving force in 3D direction. For achieving such purpose, a vibration wave driving apparatus comprises a vibration member having a shape line symmetrical with respect to two orthogonal axes, electromechanical energy conversion...http://www.google.com.au/patents/US20020145363?utm_source=gb-gplus-sharePatent US20020145363 - Vibration wave driving apparatus
