Patent ID: 11971020
Assignee: DEUTSCHES ZENTRUM FÜR LUFT-UND RAUMFAHRT E.V.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An actuator comprising
a virtual actuator main axis,
two endpieces,
a compression spring, the compression spring elastically supporting the two endpieces against one another in the direction of the actuator main axis, and
a wire that is made of a shape-memory alloy and can be controlled to implement a change in length,
wherein the wire comprises at least six contiguous length portions, each of the contiguous length portions extending and being tensioned between the two endpieces along the actuator main axis, and
wherein the length portions are
arranged with regard to one another in at least an axially symmetric way and a rotationally symmetric way with respect to the actuator main axis, and
oriented at equally sized angles with respect to a virtual reference plane to which the actuator main axis is a surface normal.