An actuator, comprising at least one beam capable of generating flexural oscillations, at least one pair of electric supply terminals (23, 24) which supply oscillation-inducing electric power to the beam(s), and a holding mechanism which holds the beam(s), the holding mechanism including at least one...http://www.google.com/patents/US7518289?utm_source=gb-gplus-sharePatent US7518289 - Actuator
