Patent ID: 6204460
Filing Date: 2001-03-20
Classification: H01H

Abstract:
A sealed contact device, comprising:a housing including a container body having an open end portion, said container body being made of ceramic;a metal lid connected to said open end portion to form a gastight space;a metal portion provided on said open end portion of said container body, wherein said metal lid and said metal portion are made of a metal material which is similar in coefficient of linear expansion to said container body;a stationary contact disposed in said gastight space, said stationary contact connected to a first member which extends from said gastight space and through said container body, and a movable contact disposed in said container body and connected to a second member which extends from said gastight space; anda sealed vent portion formed in said metal lid, wherein said sealed vent portion extends from said metal lid a shorter distance than both the distance by which said first member extends from said gastight space and the distance by which said second member extends from said gastight space.