초록 ▼

A hermetical stopper used for liquid receptacles made of aluminum including minicasks of beer. Unlike the case in conventional receptacles in which the discharge ports usually have been hermetically sealed with aluminum as the same material for the main body, the hermetical stopper according to this

A hermetical stopper used for liquid receptacles made of aluminum including minicasks of beer. Unlike the case in conventional receptacles in which the discharge ports usually have been hermetically sealed with aluminum as the same material for the main body, the hermetical stopper according to this invention is made independently of the main body so as to be able to put into and pull from out the discharge port at will, so that it is possible to be used repeatedly keeping the hermetically sealed state even after the primary use because of the discharge port being not necessary to be cut off purposely from the main body at the time of broaching the receptacle. In this way, this hermetical stopper according to the invention is very commendable also from the point of view of the effective use of resources.

대표청구항 ▼

A hermetical stopper used for a liquid receptacle, which comprises; providing a holding member down the bottom of the main body of said stopper which is to be inserted into the discharge port of said receptacle, said holding member projecting below said main body and being made to shift in the direc

A hermetical stopper used for a liquid receptacle, which comprises; providing a holding member down the bottom of the main body of said stopper which is to be inserted into the discharge port of said receptacle, said holding member projecting below said main body and being made to shift in the direction of entering and leaving said main body by the action of an operating means being located on the upperside of said main body; mounting an O ring externally on the outer circumference of the projecting part of said holding member; and making said O ring swell outward by the shifting movement of said holding member to the side of said main body, whereby said O ring is made to closely adhere to the inner wall of said liquid receptacle.