Capsule with a reservoir for substances to be mixed with liquids at time of use

Abstract

The invention concerns a capsule ( 3 ) with a reservoir ( 8 ) for substances to be mixed with liquids at moment of use, for single-dose or multi-dose containers ( 1 ). The capsule ( 3 ) contains a cap ( 4 ) for closure of the mouth ( 2 ) of the container, to which the reservoir ( 8 ) is associated, the reservoir ( 8 ) exhibiting an open end ( 8 a ) which faces towards an inside of the container. The capsule ( 3 ) further comprises an obturator ( 5 ), solidly constrained to the cap and sealedly associable to the open end of the reservoir ( 8 ) in order to close the reservoir ( 8 ) and to be extractable therefrom by means of a reciprocally distancing movement between the reservoir ( 8 ) and the cap. The capsule ( 3 ) comprises at least an opening ( 6 ), afforded in the cap which places the inside of the reservoir ( 8 ) in communication with the inside of the container when the obturator is extracted from the open end of the reservoir ( 8 ).

1 ). A capsule ( 3 ) with a reservoir ( 8 ) for substances to be mixed with liquids at moment of use, for single-dose or multi-dose containers ( 1 ), the capsule ( 3 ) containing a cap ( 4 ) for closure of the mouth ( 2 ) of the container, to which the reservoir ( 8 ) is associated, wherein the reservoir ( 8 ) exhibits an open end ( 8   a ) which, when the reservoir ( 8 ) is inserted in the cap, faces towards an inside of the container; wherein the capsule ( 3 ) comprises an obturator ( 5 ), solidly constrained to the cap and sealedly associable to the open end of the reservoir ( 8 ) in order to close the reservoir ( 8 ), the obturator ( 5 ) being extractable from the open end by a reciprocally distancing movement between the reservoir ( 8 ) and the cap ( 4 ); the capsule ( 3 ) comprising at least an opening ( 6 ), afforded in the cap ( 4 ) and placing the inside of the reservoir ( 8 ) in communication with the inside of the container when the obturator is extracted from the open end of the reservoir ( 8 ). 
   
   
       2 ). The capsule of,  claim 1 , characterised in that: the cap ( 4 ) comprises a conduit ( 7 ) which is open on an external part of the cap and coaxial with the cap ( 4 ), which conduit ( 7 ) houses the open end ( 8   a ) of the reservoir ( 8 ), in such a way that an external wall of the reservoir ( 8 ) closes the conduit ( 7 ) sealedly with respect to an outside environment; the conduit ( 7 ) exhibiting, at an internal end thereof, a disc element constituting the obturator ( 5 ), which disc element is coaxial to the conduit ( 7 ); the disc element being provided with a cylindrical lateral wall ( 5   a ) which sealingly inserts in the open end ( 8   a ) of the reservoir ( 8 ), and is connected to the lateral wall of the conduit ( 7 ) by means of bridge elements ( 9 ) delimiting a plurality of the at least an opening ( 6 ). 
   
   
       3 ). The capsule of  claim 2 , wherein the disc element exhibits a conical protuberance ( 5   b ), surmounted by a straight element ( 5   c ) arranged coaxially of the disc element, which conical protuberance ( 5   b ) is connected to the cylindrical lateral wall ( 5   a ) at a base thereof, and which conical protuberance ( 5   b ) has a conicity thereof facing towards an outside of the capsule ( 3 ). 
   
   
       4 ). The capsule of  claim 2 , wherein a plurality of seal rings ( 10 ) arranged on reciprocally parallel planes are located between the internal wall of the reservoir ( 8 ) and the cylindrical lateral wall ( 5   a ) of the disc element ( 5 ). 
   
   
       5 ). The capsule of  claim 2 , wherein: the cap ( 4 ) is fixed removably to the mouth ( 2 ) of the container ( 1 ); the reservoir ( 8 ) is mobile, with respect to the cap ( 4 ), from a closed position (A), in which the obturator ( 5 ) sealingly closes the open end ( 8   a ) of the reservoir ( 8 ), to an open position (B) in which the obturator ( 5 ) is extracted from the open end ( 8   a ) of the reservoir ( 8 ) and the openings ( 6 ) place the inside of the reservoir ( 8 ) in communication with the inside of the container. 
   
   
       6 ). The capsule of  claim 5 , wherein: it comprises a first external annular striker ( 11 ), fashioned on the external wall of the reservoir ( 8 ), which strikes against the upper surface of the cap ( 4 ) when the reservoir ( 8 ) is in the closed position thereof; it comprises a second external annular striker ( 12 ), fashioned on the external wall of the reservoir ( 8 ), which strikes against an internal annular striker ( 13 ) fashioned on the internal wall of the conduit ( 7 ), and thus defines a maximum open position of the reservoir ( 8 ). 
   
   
       7 ). The capsule of  claim 5 , wherein the cap ( 4 ) is fixed to the mouth ( 2 ) of the container ( 1 ) by a threaded coupling. 
   
   
       8 ). The capsule of  claim 1 , wherein it comprises a hermetic package of known type in which the capsule containing the substance internally of the container is inserted before being combined with the container.