Patent ID: 6464203
Filing Date: 2002-10-15
Classification: F16K

Abstract:
A swing-door gate valve characterized by comprising:an output shaft supported by a machine frame to freely advance or recede in the axial direction thereof and also to be rotatable around the axis thereof; an arm in which a base end is fixed to said output shaft, and a top end extends in a direction perpendicularly crossing to the output shaft; a gate attached to the top end of said arm, for opening and closing an opening of a chamber; an actuator for causing said output shaft to advance or recede in the axial direction; and a direction-changing mechanism for changing the direction of the movement of said arm moved in the axial direction of said output shaft, following the forward and backward movement of the output shaft, to a swing-direction movement in which said gate at the top end of the arm is moved between a position facing the opening of the chamber and a position retreated to the side of the opening, and a vertical-direction movement in which said gate is moved vertically relative to the opening of the chamber to come into contact with or to be separated from the opening.