Patent ID: 7322561
Filing Date: 2008-01-29
Classification: F16K,H01L

Abstract:
1. A vacuum processing apparatus comprising: a vacuum vessel having its inside decompressed; an opening disposed on a wall of the vacuum vessel for communicating the inside with the outside thereof and through which a sample to be processed is taken in and out; a valve body disposed outside the wall for airtightly sealing or opening the opening; a seal member disposed on a side of the valve body that comes into contact with the wall surrounding the opening, for sealing the inside of the opening by coming into contact with the wall and the valve body when the valve body seals the opening; a first projection having a projected curved surface that comes into contact with the wall, and an overhang extending from the projection which is engaged with and attached to the inner side of the valve body, which constitute the seal member; and a cover disposed on the side of the valve body that comes into contact with the wall for pressing at least a portion of the overhang onto the valve body and determining the position thereof, wherein the cover is disposed on the projection on the valve body and comes into contact with the wall when it enters the opening.