The closure has a bung bushing (10) of elastic material which fits sealingly into the charging hole of the container. The bung bushing (10) has a central opening. A bung plug (18) is seated sealingly in the central opening. The bung plug (18) can be pushed out in the direction of the inside of the c
The closure has a bung bushing (10) of elastic material which fits sealingly into the charging hole of the container. The bung bushing (10) has a central opening. A bung plug (18) is seated sealingly in the central opening. The bung plug (18) can be pushed out in the direction of the inside of the container. It is the valve member of a manually operable pressure-compensating valve.
대표청구항▼
The invention claimed is: 1. A closure for the charging hole of a liquid container to be filled under pressure, comprising: a bung bushing of elastic material which fits sealingly into the charging hole, said bung bushing having a central opening, and a bung plug seated sealingly in said central op
The invention claimed is: 1. A closure for the charging hole of a liquid container to be filled under pressure, comprising: a bung bushing of elastic material which fits sealingly into the charging hole, said bung bushing having a central opening, and a bung plug seated sealingly in said central opening and wherein an operating element having a handle is embedded in said bung plug, said bung plug being a valve element of a manually operable pressure-compensating valve and being movable by turning said handle in order to operate the valve, wherein said operating element is removable from said bung plug by pulling it out by means of said handle, and wherein said bung plug can be pushed out towards the inside of the container by means of a dispensing fitting after said operating element has been removed. 2. A closure according to claim 1, wherein said bushing has a lateral pressure-compensating duct having an outer mouth and an inner mouth, said outer mouth being disposed above the liquid level in the completely filled container, and wherein said bung plug has a sealing closed position in which it shuts off said inner mouth of the pressure-compensating duct, and wherein said bung plug has a pressure-compensating position, in which it opens a flow path from the outer mouth of the pressure-compensating duct to said inner mouth thereof and, in turn, to the outside of the bung bushing. 3. A closure according to claim 2, wherein said bung plug has an outwardly protruding sealing bead, which in sealing position is disposed upstream from said inner mouth of said pressure-compensating duct. 4. A closure according to claim 2, wherein said bung plug has a surface groove, which in the pressure-compensating position, maintains said inner mouth of said pressure compensating duct in communication with the outside of the bung bushing. 5. A closure according to claim 4, wherein said surface groove is externally covered and tightly closed in said sealing position. 6. A closure according to claim 1, wherein said bung plug has a non-round central opening and wherein said operating element is seated interlockingly within said non-round opening in said bung plug. 7. A closure according to claim 1, wherein said operating element is mounted in a snap-fit manner in said bung plug. 8. A closure according to claim 1, additionally comprising an originality safeguard, which reveals whether or not the pressure-compensating valve has already been operated. 9. A closure according to claim 1, wherein said handle is fastened to the remainder of the operating element with ribs, which break off when tilted upward for the first time. 10. A closure according to claim 1, wherein said handle comprises a lead seal that snaps into said bung bushing and tears away from said handle when it is moved for the first time. 11. A closure according to claim 1, additionally comprising an anchoring ring, on which a lead seal projecting out of said bung bushing is suspended, embedded in said bung bushing, wherein said handle snaps onto said lead seal, and wherein, when said handle is moved for the first time, said lead seal is torn away from said anchoring ring. 12. A closure according to claim 11, wherein said anchoring ring reinforces said bung bushing, so that it cannot be dislodged from the charging hole of the container without being destroyed.
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이 특허에 인용된 특허 (8)
Oberhofer Kurt,DEX ; Batschied Karl,DEX ; Schreiner Udo,DEX, Closure with a pressure compensation valve for a liquid container.
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