Patent ID: 11901716
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An apparatus comprising:
an enclosure,
wherein the enclosure includes:
a first side,
wherein the first side includes:
 a first opening,
 wherein the first opening is disposed on the first side to expose an interior of the enclosure,
 a first channel,
 wherein the first channel is disposed along a circumference of the first opening, and
 at least two first protrusions,
 wherein the at least two first protrusions are disposed at opposite sides of the first opening; and

a second side,
wherein the second side includes:
 a second opening,
 wherein the second opening is disposed on the second side to expose an interior of the enclosure,
 a second channel,
 wherein the second channel is disposed along a circumference of the second opening, and
 at least two second protrusions,
 wherein the at least two second protrusions are disposed at opposite sides of the second opening;

wherein the first opening and the second opening further includes:
a lateral edge,
wherein the lateral edge of the first opening and a lateral edge of the second opening are inclined such that a first end of the lateral edge of the first and second openings is higher than a second end of the lateral edge of the first and second openings.