Patent ID: 11909075
Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. The device according to claim 1, wherein
the cylindrical plug comprises
a plug body configured to be fitted into the through hole of the target, and
a restriction portion configured to restrict fitting of the cylindrical plug into the through hole, the restriction portion comprising a flange portion and a cylinder, wherein a diameter of the flange portion is larger than a diameter of the cylinder,

the flange portion and the cylinder are continuous to each other in an axial direction of the cylindrical plug,
the plug body and the restriction portion are continuous to each other,
the opening of the non-through hole is formed in an outer surface of the cylindrical plug on a side with the restriction portion in a direction in which the plug body and the restriction portion are continuous to each other,
the non-through hole extends from the opening to the inside of the plug body through the restriction portion, and
the bottom surface of the non-through hole is formed inside the plug body.