Patent ID: 11862419
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. 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, the second portion being solid 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.