Electrical bushing with thermal expansion compensation facilities

Abstract From the Canadian patent

Abstract of the Disclosure First and second conductive flanges adjacent first and second ends of a hollow insulator column are biased together by a through-rod assembly such that the first and second flanges cooperate with the insulator column to form a substantially enclosed chamber. The through-rod assembly means includes three coaxial cylinders connecting the first conductive flange to the second conductive flange. The innermost cylinder is connected to the first conductive flange and extends internally into the enclosed chamber. An external shoulder extends from the distal end of the first cylinder and supports one end of a second cylinder. The remaining end of the second cylinder …