Patent ID: 9434517
Filing Date: 2016-09-06
CPC Classification: A45D,B65D

Claim Text:
1. A cap structure for a vessel, which is coupled with the vessel to open/close the vessel, the cap structure comprising: an inner cap having a cylindrical shape, coupled with an upper end portion of the vessel to open/close the vessel, and including a mounting part having a predetermined width and disposed at an inner-diameter surface thereof; an outer cap having a cylindrical shape and fitted around an outer-diameter surface of the inner cap so as to be coupled with the inner cap; a circular part inserted into the mounting part and mounted in the mounting part such that at least one portion of the circular part is inwardly spaced apart from the inner-diameter surface of the inner cap by a predetermined distance, the circular part comprising protrusions, which are smoothly curved, disposed on an outer-diameter surface of the circular part such that the protrusions make contact with the inner-diameter surface of the inner cap, and first detachable protrusions disposed on an inner-diameter surface of the circular part, wherein a diameter of the circular part passing through the center of one of the protrusions is perpendicular to another diameter of the circular part passing through the center of one of the first detachable protrusions; a deformation member to deform a shape of the circular part from a circular shape to an oval shape, or from the oval shape to the circular shape; and a component inserted into the inner cap and the circular part and having a first detachable groove circumferentially disposed on an outer-diameter surface of a coupling part disposed at a lower portion of the component such that the first detachable groove is fitted around one of the first detachable protrusions.