Patent ID: 6879084

Claim:
An electrostatic-effect actuator, wherein it comprises: a substrate; a movable member in the form of a roller, designed to roll over the substrate between two end positions; at least one fixed electrode in the form of a thin film applied on the top surface of the substrate, on which the roller rolls; at least one first electrostatic petal and one second electrostatic petal made up of electrically conductive thin films and made in the form of strips, which extend over the substrate in the direction of rolling of the roller, on opposite sides with respect thereto, each with one end anchored to the substrate and the opposite end anchored to the roller; at least one dielectric layer, which separates the electrode fixed to the substrate from the petals; and means for applying a voltage between the fixed electrode and, selectively, the first and second petals, so as to control displacement of the roller either towards its first end position or towards its second end position.