Patent ID: 6581903
Filing Date: 2003-06-24
Classification: H02K

Abstract:
An electrical flow control valve for reciprocally displacing, in response to rotations of a rotor, an actuator rod threadedly engaged with the rotor, displacing with said actuator rod a valve shaft normally biased in the direction of closure, and opening a valve body, said electrical flow control valve comprising a retention section for centering a ball retained between one end of the rotor and a surface facing said end, wherein said retention section comprises:a first plate fixed at said rotor, having a cylindrical indentation including a flat surface facing the ball, housing a lower portion of the ball; and a second plate which has a surface facing an upper portion of the ball and has a curvature complementary to a curvature of the ball, and which houses at least the first plate, the ball, and the end portion of the rotor; wherein the second plate is a protective for preventing a resinous material from entering the rotor.