Patent ID: 6431518
Filing Date: 2002-08-13
Classification: F16K

Abstract:
A vacuum valve comprising:a valve housing having a valve opening, said valve opening having an axis oriented in the through-flow direction of the valve and is surrounded by a valve seat, a valve plate which is arranged at at least one valve rod and by which the valve opening can be closed in the closed state of the valve; at least a first piston-cylinder unit by which the valve plate is displaceable from its open position releasing the valve opening into a position which is located opposite the valve opening but is lifted from the valve seat; and at least a second piston-cylinder unit by which the valve plate can be moved toward the valve seat and pressed against it from its position which is located opposite the valve opening; wherein a piston rod constructed as a toothed rack is arranged at the piston of the second piston-cylinder unit and meshes with a pinion which is connected with an eccentric arrangement for swiveling the at least one valve rod and pressing the valve plate against the valve seat.