Container nozzle and cap

Claim 1

A CONTAINER CAP AND NOZZLE COMPRISING, IN COMBINATION: A CONTAINER HAVING A NECK AND OPEN MOUTH AT ONE END THEREOF, A PORTION OF THE EXTERNAL SURFACE OF SAID NECK BEING THREADED; A NOZZLE FORMED OF A FLEXIBLE RESILIENT SYNTHETIC PLASTIC COMPOSITION MOUNTED ON AND EXTENDING OUTWARDLY FROM SAID NECK AND OVERLYING A PORTION OF SAID NECK, SAID NOZZLE TAPERING FROM A MAXIMUM DIAMETER APPROXIMATELY THE SAME AS SAID NECK AT ITS JUNCTURE THEREWITH TOWARD ITS OUTER END AND HAVING AN ORIFICE AT SAID END LONGITUDINALLY SPACED FROM SAID NECK, SAID ORIFICE BEING SUBSTANTIALLY SMALLER THAN THE MOUTH OF SAID NECK; A FLEXIBLE RESILIENT ANNULAR SEALING RING IN THE FORM OF AN UPSTANDING FLANGE RADIALLY SPACED FROM THE WALL AND LONGITUDINALLY SPACED FROM THE ORIFICE OF THE NOZZLE, SAID RING BEING SECURED TO THE WALL OF THE NOZZLE ALONG THE MARGIN OF THE RING REMOTE FROM THE ORIFICE AND HAVING ITS OTHER MARGIN FREE AND, A CLOSED-END SCREW CAP OF HARD AND RIGID MATERIAL HAVING THREADS FOR ENGAGING THE THREADS ON SAID CONTAINER AND BEING REMOVABLY MOUNTABLE OVER SAID NOZZLE AND SEALING RING, SAID CAP CARRYING A FIRST INNER SEALING SURFACE DISPOSED AT RIGHT ANGLES TO THE AXIS OF ROTATION OF THE CAP AND IN POSITION TO SEAT UPON AND SEAL THE ORIFICE OF SAID NOZZLE WHEN THE CAP IS MOUNTED ON SAID NOZZLE AND A SECOND INNER SEALING SURFACE OF GENERALLY CONICAL CONFIGURATION TAPERING TOWARD SAID CLOSED END IN POSITION FOR SLIDABLY ENGAGING AND RADIALLY COMPRESSING THE FREE MARGIN OF SAID SEALING RING TO SEAT SAID NOZZLE FIRMLY AGAINST THE MOUTH OF SAID CONTAINER AND SEAL SAID CAP AGAINST SAID SEALING RING WHEN THE CAP IS MOUNTED OVER THE NOZZLE.