A device used as an electro-mechanical converter includes a body having a spherical outer surface, a structure peripherally surrounding the spherical body and electromagnetic means spatially located from the body to cause a rotational displacement of the body. The body is connected to a static support...http://www.google.fr/patents/US4634889?utm_source=gb-gplus-shareBrevet US4634889 - Electro-mechanical converter with several degrees of freedom
Electro-mechanical converter with several degrees of freedom
