Patent ID: 7160393
Filing Date: 2007-01-09
Classification: C23C,H01L

Abstract:
1. A vacuum chamber assembly comprises a floor plate; an upper plate; a plurality of props standing on said floor plate to support said upper plate; side plates for closing side opening portions between said props; first connected portions fixed between said floor plate and said props by screw fixing members, and second connected portions fixed between said upper plate and said props by screw fixing members; wherein side surfaces of said floor plate, said props and said upper plate which constitute circumferential edge portions of said side opening portions are provided with installation grooves, respectively; wherein a gasket is provided and is unitedly constituted of side surface sealing portions installed in said installation grooves formed on said circumferential edge portions of said side opening portions, respectively, and connection sealing portions for sealing said first connected portions and said second connected portions; wherein said side plates are fixed to said circumferential edge portions so as to close said side opening portions via said side surface sealing portions of said gasket, respectively; and wherein projections projecting along borderlines of said first connected portions and said second connected portions are respectively formed, and sealing grooves for engaging said projections are respectively formed in said connection sealing portions of said gasket.