Patent ID: 6307729
Filing Date: 2001-10-23
Classification: H01G

Abstract:
A vacuum capacitor comprising:an insulating envelope;a pair of end electrodes, each end electrode being brazed to a corresponding end of the insulating envelope and being formed together with the insulating envelope to constitute a vacuum vessel;a plurality of cylindrical electrode plates, each cylindrical electrode plate, constituting one of a pair of cylindrical electrodes, having a mutually different diameter and being extended along the insulating envelope from an inner surface of the corresponding one of the pair of end electrodes so as to be inserted into a space between the mutually adjacent cylindrical electrode plates constituting the other of the pair of cylindrical electrodes; anda positioning member to position one of the pair of cylindrical electrodes to the other of the pair of cylindrical electrodes in such a manner as to equalize a spatial interval between each cylindrical electrode plate and wherein each of the pair of end electrodes is formed substantially in a letter T shape of cross section and wherein the positioning member comprises a plurality of circular U-shaped rails extended concentrically at equal spatial intervals and vertically on the inner surface of each of the pair of end electrodes, each circular U-shaped rail receiving the corresponding one of the cylindrical electrode plates of each of the pair of cylindrical electrodes.