Patent ID: 7721428

Claim:
A method for making an electrode assembly for use in a vacuum interrupter, the method comprising: forming an end portion at a perimeter of a substantially cylindrical coil segment; joining a first side of a substantially disk-shaped structure to the end portion of the substantially cylindrical coil segment by contacting a contiguous surface at the end portion of the substantially cylindrical coil segment directly to the first side of the disk-shaped structure such that the first side of the disk-shaped structure is flush with the contiguous surface of the substantially cylindrical coil segment end, the disk-shaped structure having a higher volume resistivity than a volume resistivity of the substantially cylindrical coil segment; and joining an electrical contact a second side of the disk-shaped structure such that, once joined, the electrical contact and the disk shape structure share an outer periphery and substantially all of a current that flows between the substantially cylindrical coil segment and the electrical contact flows through the end portion.