Patent 11780649 was granted and assigned to Tiger Corporation on October, 2023 by the United States Patent and Trademark Office.
A plug body includes (a) a spout part, (b) a plug including a fitting part and removably fitted to an inner side of the spout part, and (c) a sealing member in a ring shape attached to a lower side of the fitting part of the plug. When the plug is inserted, the sealing member is in contact with a portion on a lower side of the spout part to form a sealing structure.