Patent ID: 11915867
Assignee: GOODRICH ACTUATION SYSTEMS SAS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 6:
7. A method of preventing rotation of an actuator rod in an electromechanical actuator, comprising:
providing said actuator rod housed in an actuator housing;
providing a linear variable differential transformer (LVDT) fixed to the actuator housing;
providing an anti-rotation component configured to contact the outer surface of said LVDT;
providing a first anti-rotation surface feature or features on said outer surface of the linear variable differential transformer;
providing a second anti-rotation surface feature or features on said anti-rotation component;
wherein said first and second anti-rotation features are sized and shaped relative to each other such that, when in contact with each other, they are configured to prevent rotation of actuator rod in use;
providing a motor; and
providing a mechanical converter configured to transform torque produced by the motor into linear force applied to said actuator rod;
wherein the actuator rod comprises a hollow cylindrical region surrounding the LVDT; and
wherein said anti-rotation component is directly machined onto the inner surface of the actuator rod and is positioned around the external surface of the LVDT.