Patent ID: 6206029
Filing Date: 2001-03-27
Classification: F16K,Y10T

Abstract:
A valve of a vacuum apparatus provided between left and right chambers for opening and closing chamber openings thereof, which comprises:a valve seat body disposed between said left and right chambers and having left and right communicating openings communicating with said chamber openings, said valve seat body having a valve accommodating room;a valve body arranged in said valve accommodating room so as to rotate around its center axis and to move in an axial direction of said valve seat body so as to ensure a tight contact between an outer surface of the valve body and an inner surface of the valve accommodating room and to release the tight contact therebetween in order to open and close said communicating openings by adjusting its rotary position; anda driving section for moving said valve body in an axial direction of said valve seat body and for rotating it around its center axis,wherein said driving section comprises a sliding magnetic actuator with a first ring-like magnet moving the valve body by magnetic coupling to a second ring-like magnet during rotary and axial movement.