Back to results
US 2023/0154706 A1Published application
Toroidal encapsulation for high voltage vacuum interrupters
AssigneeEaton Intelligent Power Limited
InventorsGanesh Kumar Balasubramanian, Eric Dennis Smith, Louis G. Campbell, Wangpei Li, Xin Zhou
Life of this patent
Estimating the term…
Abstract
A vacuum interrupter has a toroidal portion at one or both ends that achieves higher dielectric levels and hence higher interruption levels.
Claims19
A vacuum interrupter structured to interrupt electrical current to a protected portion of a circuit, comprising:
- an envelope comprising a cylinder that is insulative and a pair of end caps situated at opposite ends of the cylinder, the envelope having an interior region and having a reduced pressure within the interior region;
- a movable contact movably situated on the envelope and situated adjacent an end cap of the pair of end caps;
- a stationary contact situated on the envelope and situated adjacent another end cap of the pair of end caps;
- and
- a coating that is formed at least in part of an insulative material and that is situated on an exterior of the envelope, the coating comprising a first portion situated on the cylinder and having a first thickness in a radial direction with respect to the cylinder, the coating further comprising a second portion situated adjacent the end cap and having a second thickness greater than the first thickness in the radial direction;
- wherein the second portion has an outer surface having an arcuate profile along a longitudinal direction with respect to the cylinder, and
- wherein the arcuate profile is substantially circular.
4 more elements
(canceled)
(canceled)
Dependencies are inferred from the claim text.