device in a container with one or more similar tappöppningar for elimination of air in the container, and the replication of the emptying pressure lost

摘要

The invention relates to a device which is inserted in the pouring neck of a container to enable air/oxygen in the container to be eliminated and to enable the potential back pressure in the container to be increased. The invention solves this problem by enabling an expansion element, which is fitted in the upper or lower pouring neck of the container, to be filled with water/air in such manner that the contents of the container are not admixed. This is achieved by providing the ordinary pouring neck of the container or, alternatively, a specially designed pouring neck, for example in the bottom of a bottle, with a tube provided with vertical air passages along the outer side. The air passages commence at the upper edge of the tube and should preferably terminate at the point at wich the neck of the container begins to expand. An expansion element is attached to the lower end of the tube. When the expansion element is filled with water or air, the air external to the element within the container is forced out through the air passages in the tube and a high proportion of the back pressure which existed in the container prior to pouring is restored, following which the container may be resealed. The invention is used primarily for containers and bottles filled with carbonated drinks and wines or, alternatively, for tins and containers filled with chemicals, such as paints, which are not always completely used on one single occasion.