Patent ID: 6914184

Claim:
A radiation resistant enclosure comprising a door member hingedly fixed to a frame member having a doorway adjacent edge portions of the members being electrically conductive, one member including a conductive channel extending lengthwise and having a back wall and a pair of side walls and the other member including an arched contact plate, a plurality of flange members and a conductive blade extending lengthwise and insertable within said channel, and a pair of elongated metal plates for engaging one respective side wall in said channel and the blade to establish good electrical contact therebetween, characterized in that said side walls incline inwardly towards one another whereby to describe a truncated edge shaped cross-section including an interior shoulder and an elongated interior chamber adjacent the back wall, and each plate has opposite edges with a planar portion engaging side wall of said chamber and the shoulder, a bowed forward section extending from the planar portion engaging the side wall adjacent to the opening to said channel, and a bowed rearward section extending from the other edge and a bowed central section connecting said sections and adapted to engage the blade.