Patent ID: 9595409
Date: 2017-03-14
CPC Classifications: H01H,H02B

Claim:
1. A tank for a circuit breaker, the tank comprising: an integral body defining an interior volume and having opposing ends, and an annular flange at each end of the body, the flanges defining a central longitudinal axis of the body, wherein the body has a substantially continuous internal surface defining a top portion of the tank disposed substantially above the central longitudinal axis and in an upper half of the body and the body defining a bottom portion of the tank disposed substantially below the central longitudinal axis and in a bottom half of the body, the top portion being spaced from the central axis as defined by at least a first radius from the central longitudinal axis, and the bottom portion is spaced from the central axis as defined by at least a second radius from central longitudinal axis, with the second radius being greater than the first radius so as to reduce an electric field intensity on the bottom portion of the body and thus reduce effects of foreign particles within the interior volume, regardless of phase rotation, wherein the body includes transition portions defining a smooth transition between the top portion and the bottom portion, each transition portion being defined by transition radii that are sized so that the first and second radii blend smoothly and wherein each transition portion extends into the upper half of the body.