Patent ID: 8405277
Filing Date: 2013-03-26
Classification: F03G

Abstract:
1. A composite actuator, which is a long and spiral composite actuator, the composite actuator, comprising: a first long actuator portion and a second long actuator portion that face each other; and connection members that connect the long sides of each of the first long actuator portion and the second long actuator portion to each other, a part of the first long actuator portion and a part of the second long actuator portion being apart from each other to thereby form a hollow structure, the first long actuator portion and the second long actuator portion each having a pair of long electrodes and a long electrolyte layer having an electrolyte, a long internal electrode of the first long actuator portion and a long internal electrode of the second long actuator portion being the same cathode or anode electrodes, a long external electrode of the first long actuator portion and a long external electrode of the second long actuator portion being counter electrodes to the cathode or anode electrodes, and the actuator expanding and contracting in the direction of the screw axis by voltage application between the electrodes.