when compressing the springs 38 but drives the brake governor 40 when the springs expand as the springs 38 expand the brake governor 40 is accelerated to motor speed when power to the motor is interrupted the roller clutch 50 allows the brake governor 40 to continue to overrun until the potential energy of the brake governor 40 is dissipated the compression spring loading of the weights in the brake governor is sufficient to restrict the weights from rotating outward and creating any drag at normal operating motor speed therefore the brake governor has minimal effect on motor operation the intermediate shaft 24 of the planetary reduction gear transmits torque and motion to the output shaft 30 by means of the pins 78 coupled to the cam roller assembly 28 in normal operation the motor is energized and the motor torque is transmitted through the spur gear reduction assembly 18 and the planetary reduction gear assembly 26 to the rotary output shaft 30 to position the load while compressing the springs 38 as the motor senses that the rotary output shaft has reached the command position the motor switches from the run mode to the hold mode the actuator then waits for another command to run further in the load direction or to return to its initial position thus the motor continues to seek the command position as directed and to hold the load and the spring when the command position has been reached in the event of a loss of line power the motor will immediately lose the ability to hold the load and the stored energy.