Dispensing container closure

Claim 1

A DISPENSING CLOSURE DEVICE FOR A CONTAINER, COMPRISING AN INTEGRAL BODY MADE OF FLEXIBLE RESILIENT PLASTIC MATERIAL, SAID BODY HAVING AN ANNULAR UPPER PORTION IN THE FORM OF A THICK SUBSTANTIALLY RIGID RING, AN ELONGATED SUBSTANTIALLY RIGID SLEEVE COAXIAL OF THE RING, HAVING A PASSAGE THERETHROUGH, AND PROJECTING OUTWARDLY THEREFROM, AND A RELATIVELY THIN FLEXIBLE ANNULAR DIAPHRAGM COAXIAL OF THE RING AND THE SLEEVE, THE DIAPHRAGM HAVING A WIDTH WHEN RELAXED MEASURED FROM ITS AXIS WHICH EXCEEDS THE RADIAL DISTANCE BETWEEN THE RING AND THE SLEEVE, THE RING, DIAPHRAGM, AND SLEEVE FORMING AN IMPERFORATE CONDUIT, THE DIAPHRAGM BEING THE SOLE MEANS SECURING THE SLEEVE TO THE RING, THE RELAXED DIMENSIONS OF THE DIAPHRAGM RELATIVE TO THE DIAMETERS OF THE RING AND THE SLEEVE BEING SUCH THAT THE SLEEVE MAY BE ADVANCED INTO AN OUTER TERMINAL POSITION WITH THE DIAPHRAGM IN AN OUTWARDLY CONVERGING FRUSTO-CONICAL SHAPE, AND THAT THE SLEEVE MAY BE RETRACTED INTO AN INNER TERMINAL POSITION WHEREIN THE DIAPHRAGM IS IN INWARDLY CONVERGING FRUSTO-CONICAL SHAPE, DURING TRAVEL OF THE SLEEVE BETWEEN ITS ADVANCED AND RETRACTED POSITIONS, THE DIAPHRAGM FIRST BEING RADIALLY COMPRESSED FOLLOWING WHICH IT EXPANDS RADIALLY, WHEREBY THE DIAPHRAGM FUNCTIONS AS A TOGGLE TO HOLD THE STEM STABLY IN EACH OF SAID TWO POSITIONS, THE OUTER END OF THE PASSAGE IN THE SLEEVE HAVING A CENTRAL ORIFICE THEREIN, A CENTRAL STEM-LIKE MEMBER CONNECTED AT AN INNER PORTION THEREOF TO THE RING, THE STEM-LIKE MEMBER HAVING AN OUTER FREE END ALIGNED WITH THE ORIFICE AND ADAPTED TO ENTER AND SEAL THE ORIFICE WHEN THE SLEEVE IS RETRACTED AND TO BE WITHDRAWN FROM THE ORIFICE WHEN THE SLEEVE IS ADVANCED OUTWARDLY, THE CLOSURE DEVICE PROVIDING COMMUNICATION FOR THE PASSAGE OF A FLUID THERETHROUGH FROM INWARDLY OF THE STEM-LIKE MEMBER TO THE ORIFICE IN THE SLEEVE.