Abstract: An oscillatory system for a motorized drive unit for the generation of a rotary oscillatory movement is provided. The system includes a first oscillatory component and a second oscillatory component, the components capable of oscillating relative to one another around an axis of oscillation; and at least two elongate spring elements, each spring element having a first fastening point and a second fastening point spaced apart from one another. The spring elements are elastic in the direction of the rotary oscillatory movement. For each spring element the first fastening point is connected to the first oscillatory component and the second fastening point is connected to the second oscillatory component such that the spring elements intersect at the axis of oscillation, the axis of oscillation having an angle of intersection different from 0 degrees.

Abstract: An electro-polymer motor comprising a fixed member and a first actuator having a first end fixedly connected to the fixed member and a second end is presented. The first actuator comprises a polymer positioned between two electrodes. The electrodes are in communication with a power supply. The motor also comprises a driven member comprising a first leg and a second leg such that the first leg and the second leg are separated by an axis. The driven member is fixedly connected to the second end of the first actuator. The motor also comprises a compressible member having a first end fixedly connected to the fixed member and a second end fixedly connected to the second leg of the driven member. The compressible member is spaced apart from the first actuator. The first actuator elongates after the power supply applies a voltage across the electrodes to move the driven member.