Patent ID: 7971739
Filing Date: 2011-07-05
Classification: B65D,Y10S

Abstract:
1. A closure for a container having contents, particularly a container made of plastics material or glass, comprising a first screw cap particularly of plastics material, to be sealingly connected to a neck of said container, which neck has a rim, and comprising at least one knife edge disposed in a region of an inside width of said neck around a center axis of said first screw cap for severing a sealing film or foil upon axial displacement of said at least one knife edge through said sealing film or foil, which knife edge is disposed on a receptacle held substantially centrally by said first screw cap via a flexible apron and is movable relatively to said first screw cap toward said sealing film or foil, which receptacle contains an ingredient to be mixed with the contents of said container, and further comprising a central union, having a male thread, on an upper transverse wall of said first screw cap and a second screw cap that can be screwed down onto, and unscrewed up from, the same by means of actuating means disposed on its inside end face, by means of which, when said second screw cap is screwed onto said central union, said receptacle with its at least one knife edge can be moved toward said sealing film or foil, which second screw cap has an initial screwing position in which said sealing film or foil is still intact and, after continued screwing, a final screwed position in which said sealing film or foil has been pierced by said at least one knife edge, characterized in that a) said first screw cap remains on said neck of said container after it has been sealingly connected thereto, b) said second screw cap has a decanting and/or drinking opening of a sports cap type, c) at least a first axial passageway for the contents of said container is provided radially between said first screw cap and said receptacle, d) said receptacle is guided in a sliding manner centrally in a coaxial guide in a transverse wall of said first screw cap, which initially bears axially against a substantially radial inside surface of said first screw cap, said receptacle, by bearing against said first screw cap, providing a seal between said container and said second screw cap and thus an environment, and when it moves with its at least one knife edge concentrically relatively to said sealing film or foil to an end position, it is capable of severing said sealing film or foil, and in this end position said sealing film or foil has been at least partially severed, said ingredient to be mixed in has been released into the contents of said container, and a second passageway has been opened between said receptacle and said first screw cap, e) said second screw cap, on its inside covering surface, and said receptacle, on its end face opposite thereto, together comprise, as actuating means, a concentric connecting pair consisting of a plunger and a counterpart mating therewith, which interengage axially immovably, said plunger and its counterpart being positioned axially relatively to each other such that, by said continued screwing of said second screw cap on said central union to the final screwed position, said container's contents can be released to flow to said second screw cap and its decanting and/or drinking opening, this being achieved by said receptacle being moved, during such continued screwing, toward said sealing film or foil to cause said at least one knife edge to pass through said sealing foil or film to break said seal between it and said second screw cap, f) when said second screw cap is turned in a reverse direction, i.e., back to its initial screwing position, said receptacle can be moved by said actuating means back to its sealing position against said first screw cap such that a route to said second screw cap and its decanting opening is again blocked.