Patent ID: 9581147
Date: 2017-02-28
CPC Classifications: F03G

Claim:
1. An actuator comprising: at least one control element including a thermally activatable transducer material which extends in a longitudinal dimension, is responsive to the supply or dissipation of energy, and changes from a first shape state into a second shape state; a mechanical energy store, which is functionally connected to the at least one control element which in the second shape state exerts on the at least one control element a restoring force which returns the at least one control element to the first shape state; the mechanical energy store includes an elastomer body which is always in direct physical and thermal contact with the at least one control element regardless of whether the at least one control element is in the first or the second shape state; and the elastomer body is electrically insulating and is connected in a spatially fixed manner to the at least one control element in at least two spatially separate regions along the control element so that a change in shape of the at least one control element compresses or elongates the elastomer body to generate the restoring force; and wherein the elastomer body comprises an elastomer material containing at least one additive which increases the thermal conductivity of the elastomer.