Patent ID: 7355325

Claim:
Electromechanical actuator, comprising: at least two, independently movable, actuating elements; a first end of each said at least two actuating elements being a respective separate interaction portion for contacting a body to be moved; said interaction portions being free from mechanical contacts with any other parts than said body to be moved and said respective actuating body; an actuator backbone, mechanically connecting a respective second end of said at least two actuating elements opposite to a respective said first end; said at least two actuating elements each comprising an electromechanical monomorph, bimorph or multimorph volume, which upon excitation exhibits shape changes; said shape changes comprising a dimension change in a longitudinal direction directed between said actuator backbone and said interaction portion and a bending of said electromechanical monomorph, bimorph or multimorph volume perpendicular to said longitudinal direction and parallel to a main displacement direction of said body to be moved; and an actuator stator portion, mechanically supporting said actuator backbone; means for partially suppressing transfer of acoustic waves between each of said at least two actuating elements and said body to be moved comprising respective said interaction portions.