Closure structure of a container

Claim 1

A CLOSURE STRUCTURE FOR DISPENSING THE CONTENT OF A PLIABLE CONTAINER, COMPRISING AN OUTER TUBULAR CLOSURE MEMBER, SAID CLOSURE MEMBER BEING ADAPTED TO BE TIGHTLY SECURED AT ONE END IN AN OPENING OF THE CONTAINER FOR DISPENSING THE CONTAINER CONTENT THROUGH SAID CLOSURE MEMBER, A CENTRAL INNER CLOSURE MEMBER SECURED WITHIN THE OUTER CLOSURE MEMBER COAXIALLY THEREWITH AND PROTRUDING FROM THE OTHER END THEREOF TO DEFINE AN ANNULAR DISCHARGE PASSAGE BETWEEN THE INNER AND THE OUTER CLOSURE MEMBER, A CLOSURE CAP SLIDABLY FITTED OVER SAID OUTER CLOSURE MEMBER AND SAID CENTRAL INNER CLOSURE MEMBER COAXIALLY THEREWITH, SAID CLOSURE CAP BEING AXIALLY DISPLACEABLE IN REFERENCE TO THE OUTER AND INNER CLOSURE MEMBERS BETWEEN A CLOSED POSITION CLOSING SAID PASSAGE AND AN OPEN POSITION UNCOVERING SAID PASSAGE, THE OTHER END OF THE OUTER CLOSURE MEMBER TERMINATING IN AN ELASTICALLY FLEXIBLE TONGUE SLIDABLY ENGAGING AN INNER WALL PORTION OF SAID CLOSURE CAP, SAID TONGUE BEING BIASED INTO CONTINUOUS SEALING ENGAGEMENT WITH SAID WALL PORTION IN ANY POSITION OF AXIAL DISPLACEMENT OF THE CLOSURE CAP IN REFERENCE TO SAID INNER AND OUTER CLOSURE MEMBERS, AND SPRING MEANS COACTING WITH SAID CLOSURE CAP TO BIAS THE SAME INTO THE SAID PASSAGE CLOSING POSITION.