Patent ID: 6867385
Filing Date: 2005-03-15
Classification: H01H

Abstract:
1. An end cover for a vacuum interrupter, the end cover comprising: a substantially annular first portion, the first portion being attached to a substantially cylindrical hollow body of the vacuum interrupter; a concave second portion, the second portion being concentric to the first portion and concave with respect to the body; and a substantially annular third portion, the third portion being concentric with the first portion, wherein at least a portion of the concave second portion is positioned along an axis defined between electrical contacts of the vacuum interrupter and a joint at which the end cover is attached to the hollow body, and wherein the axis defines an opening of a shield that encloses the electrical contacts, such that the concave second portion shields the joint from electrical stress associated with movement of the electrical contacts during an operation of the vacuum interrupter.