ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,724, issued on Dec. 9, was assigned to BELIMO HOLDING AG (Hinwil, Switzerland).
"Actuator with an electric motor and a method of controlling the electric motor to maintain a current position" was invented by Stefan Wildhaber (Neuhaus, Switzerland) and Balazs Schweighoffer (Uster, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "An actuator includes an electric motor having cogging torque, and a controller that controls operation of the electric motor and determines a motor position of the electric motor, the electric motor having a set of stable positions being defined by the cogging torque. The controller includes a circuit that controls t...