Double-chambered container for liquids

Claim 1

Double-chambered container in plastic material for liquids formed by a container (1) equipped in the upper part with a neck (2) open, bearing a first thread (3), with a shoulder (18) and in the lower part with a closed bottom, characterized by the fact of comprising: (a) a tubular sealing member (4) having: a disposable lower removable bottom (5), a flaring at the open upper end (6), a flange (7) stretching outwards from said flaring, a cylindrical skirt (8) stretching downwards from said flange, a second thread (9) on the internal face of said cylindrical skirt, engageable with said first thread, to take the edge of said neck in contact engagement with the lower surface of said flange and a first circular bead (10) on the external face of said cylindrical skirt; and (b) an open bottomed tubular cartridge (11), insertable in fluid-tight engagement inside said sealing member, said cartridge having a lower end open (12), an upper cap (13) a second circular bead (15) on the internal surface of said cap, and a safety ring (14) removably connected in the lower part of said cap, said cartridge being able to occupy a first storing position when said sealing member is threaded on said container through said thread, wherein it is able to receive in fluid-tight engagement said cartridge so that a hermetically closed chamber (19) is formed, defined by said cartridge and by said bottom of the sealing member, said member and said cartridge being locked by the unidirectional engagement of said first and said second bead and by the stop of said ring against the shoulder of the container, and a second position of use after having torn the safety ring and pressed on the cap, wherein the open end of the cartridge removes said bottom from the sealing member so that the liquids present in said container and said hermetically closed chamber are connected.