Patent ID: 6092786
Filing Date: 2000-07-25
Classification: F16K

Abstract:
A gate valve for opening and closing an aperture formed in a body of a chamber and designed so that an object is loaded into or unloaded from the chamber through the aperture, comprising:a lift mechanism provided on a side portion of the chamber body;a supporting portion supported by the lift mechanism for up-and-down motion; anda valve plate supported by the supporting portion and movable between a closed position such as to close the aperture of the chamber body and an open position such that the valve plate is separated from the aperture to leave the aperture open as the supporting portion is moved up and down by the lift mechanism,wherein said supporting portion includes a first supporting member attached to the lift mechanism and a second supporting member supporting the valve plate and rotatably coupled to the first supporting member, and wherein the second supporting member is rotatable with respect to the first supporting member around an axis parallel to an up-and-down direction of the supporting portion.