Patent ID: 6308857
Filing Date: 2001-10-30
Classification: H01H

Abstract:
A vacuum chamber, comprising:a plurality of covers each constructed in a cup-shaped fashion and having a main region with a first thickness and a free end with a second thickness being thinner than said first thickness and extending from said main region;at least one insulating cylinder made from ceramic and having end faces each closed by one of said covers;at least one support ring disposed between each of said covers and an end face of said end faces of said insulating cylinder, said free end of each of said covers firmly soldered to said end faces of said insulating cylinder with an interposition of said support ring there-between;a movable contact stem;a movable contact piece attached to said movable contact stem;a fixed contact stem;a fixed contact piece attached to said fixed contact stem, said movable contact piece attached to said movable contact stem and said fixed contact piece attached to said fixed contact, respectively, penetrating said covers; anda vacuum-tight sealing element fastened between one of said covers and said movable contact stem and permits a movement of said moveable contact stem, said sealing element having at least one layer connected to said one of said covers and said movable contact stem.