Patent ID: 6142394
Filing Date: 2000-11-07
Classification: F02M

Abstract:
A hydraulically actuated device comprising:a device body defining an inlet passage separated from an outlet passage by a first valve seat and a second valve seat, and a control passage that opens into an area between the first valve seat and the second valve seat;a spherical ball valve member trapped between the first valve seat and the second valve seat, the ball valve member having a first radius of curvature;said inlet passage being fluidly isolated from the control passage by the ball valve member when the ball valve member is in contact with the first valve seat, and the outlet passage being fluidly isolated from the control passage by the ball valve member when the ball valve member is in contact with the second valve seat;an electrical actuator attached to the device body; anda pin movable by operation of the electrical actuator to come into contact with and push against the ball along a curved striking surface of the pin, the striking surface having a second radius of curvature larger than the first radius of curvature.