Curved shape actuator device composed of electro active layer and fiber composite layers

Abstract

The piezo-composite curved actuator of the present invention comprises a piezoelectric layer (10), a lightweight fiber-reinforced lower composite layer (20) with a high CTE (coefficient of thermal expansion) and a low modulus, which is placed under the piezoelectric layer, a lightweight fiber-reinforced upper composite layer (30) with a low CTE and a high modulus, which is placed on the piezoelectric layer, and an insulator layer (23) placed between the piezoelectric layer and the upper composite layer. The piezo-composite curved actuator may further comprise an insulator layer (24) placed on the upper composite layer. Also, the piezo-composite curved actuator may further comprise insulator layers (22) placed between the insulator layer (23) and the lower composite layer (20) at the both sides of the piezoelectric layer (10).

Dependencies are inferred from the claim text.