Abstract: A nozzle unit is attached onto the lower side of a bottom plate of a plug body. A fin and a pair of side plates protrude from the nozzle unit. The fin is arranged below and apart from the liquid-passage hole in the bottom plate in horizontal direction. The side plates are arranged in vertical direction, and put the liquid-passage hole and the fin between them. When a hot drink is poured into the container body to increase the inner pressure of the container body, the fin and the side plates can obstruct the exhausting flow rate of the inner pressure so that the inner pressure cannot be exhausted rapidly. When the fin is bent towards the liquid-passage hole due to the increased inner pressure, the inner pressure can be exhausted efficiently according to its magnitude.

Abstract: A plug comprises a plug body serving as the plug of a container for holding beverage and a lid body. A hinge and a lock device are arranged opposing to each other. A lip portion protrudes from the top plate of the plug body. A liquid-passage hole is formed in the lip portion. The upper surface of the lip portion is made into a tapering shape that is highest at the lock device side and lowest at the hinge side. The resilient member that forces the lid body towards an opening direction protrudes from the top plate of the lid body. An air hole is set in the top plate of the plug body and the resilient member is set to vertically block the air hole when the lid body is closed.

Abstract: A drinking receptacle cover comprising a slant cover plate having a top surface and a bottom surface and covering a heat insulating cup at the open top; a rim surrounding the cover plate; a valve assembly having a valve element for opening and closing a spout formed at a lowest level portion of the cover plate adjacent to the rim; a push rod for operating the valve assembly; and a return spring for urging the push rod in the anti-actuating direction. The push rod is disposed to penetrate an insertion opening formed in the rim to be retractable along the bottom surface of the cover plate. An actuating lever which is engaged with the outer end of the push rod to advance it into the inside of the rim is pivotally located on the outer side of the rim. The actuating lever has an actuating section extending along the outer side of the receptacle. The valve assembly has an engaging arm to be engaged with the push rod and a closing arm having the valve element at the free end.