Patent ID: 8464883
Filing Date: 2013-06-18
Classification: B65D

Abstract:
1. A closure device for a metered addition of a liquid substance packaged separately in the closure device into a container ( 26 ) equipped therewith and containing a gas releasing liquid, the closure device comprising a connector sleeve ( 1 ) and a twist cap ( 2 ) fitting thereon from above in an air-tight manner, wherein the liquid substance is enclosed between the connector sleeve ( 1 ) and the twist cap ( 2 ), the connector sleeve ( 1 ) holds a cup ( 7 ) via an inner overhang ( 6 ), the cup ( 7 ) extending into a connector ( 5 ) of the container ( 26 ) and including at least one opening ( 9 ) at a bottom thereof, the opening ( 9 ) having such a small dimension that when a pressure above and below the opening ( 9 ) is the same, the liquid substance in the cup ( 7 ) is prevented by capillarity from flowing through the opening ( 9 ) into the container ( 26 ), and wherein the liquid substance is stored in a separate, foil-sealed substance cup ( 31 ) which is inserted upside-down in a nipple ( 14 ) integrally formed on an inside of the twist cap ( 2 ), with a foil ( 27 ) pointing downward, wherein the nipple ( 14 ) extends downwardly past the substance cup ( 31 ) and has an internal thread ( 28 ) on which a piercing and cutting mechanism ( 30 ) having upwardly directed cutting tips ( 29 ) is rotatably supported; the cup ( 7 ) tapering downward conically toward the opening ( 9 ) and, in an interior of a conically tapering base of the cup ( 7 ), upwardly extending retaining rods ( 33 ) are integrally formed and the retaining rods ( 33 ) penetrate the piercing and cutting mechanism ( 30 ) and secure the piercing and cutting mechanism ( 30 ) from rotating relative to the cup ( 7 ), so that when the twist cap ( 2 ) and the nipple ( 14 ) integrally formed thereon are rotated in a loosening direction, the piercing and cutting mechanism ( 30 ) is moved upward by a threaded connection and without rotating, to open the foil ( 27 ) using the cutting tips ( 29 ), and wherein when the twist cap ( 2 ) is further loosened, thereby carrying along the connector sleeve ( 1 ), a pressure of an interior of the container ( 26 ) and a pressure of the ambient air equalize and, due to a higher pressure in the cup ( 7 ) the liquid substance is pressed out of the cup ( 7 ) through the opening ( 9 ) into the container ( 26 ).