Patent ID: 6032549
Filing Date: 2000-03-07
Classification: H02N,Y10T

Abstract:
An actuator comprising:a base;a guide assembly mounted on the base;a first displacing unit mounted on the base for displacement into engagement with the guide assembly to place the first displacing unit in a fixed state and for displacement in a moving direction along the guide assembly when the first displacing unit is not in a fixed state;a second displacing unit integrally connected to the first displacing unit and mounted on the base for displacement in the moving direction along the guide assembly; anda holder mounted in contact with the guide assembly for movement with the second displacing unit and for supporting the second displacing unit on the guide assembly with a frictional force weaker than a force with which the first displacing unit is maintained in the fixed state to thereby allow the second displacing unit and the holder to move in the moving direction while the holder contacts the guide assembly and while the first displacing unit is in the fixed state.