Spray nozzle comprising a base member and a cap

Claim 1

A SPRAY NOZZLE FOR DISPENSING AQUEOUS SOLUTIONS IN THE FORM OF FINE PARTICLES WHICH COMPRISES A BASE MEMBER AND A CAP, THE BASE MEMBER BEING OF ONE PIECE OF MOLDED PLASTIC MATERIAL HAVING A LOWER TUBULAR PORTION ADAPTED TO FIT IN THE NECK OF A CONTAINER, A FLANGE OUTWARDLY EXTENDING FROM SAID LOWER TUBULAR PORTION TO REST AGAINST THE UPPER PORTION OF THE NECK OF A CONTAINER IN WHICH IT MAY BE PLACED AND TO POSITION THE BASE THEREIN, A SECOND TUBULAR PORTION EXTENDING ABOVE SAID FLANGE MEMBER AND BEING OF LESSER DIAMETER THAN THE GREATEST DIAMETER OF SAID FLANGE AND TERMINATING AT THE UPPER END IN A FLAT SURFACE OF ANNULAR CONFIGURATION PROVIDING A RECESSED, UNOBSTRUCTED CIRCULAR MIXING CHAMBER, SAID RECESSED CHAMBER BEING PROVIDED WITH TWO SMALL PASSAGEWAYS EXTENDING THROUGH SAID BASE MEMBER PERMITTING PASSAGE OF FLUIDS THERETHROUGH INTO SAID MIXING CHAMBER, SAID CAP MEMBER BEING ADAPTED TO FIT CLOSELY OVER THE UPPER PORTION OF SAID BASE AND HAVING TUBULAR SIDE WALLS ADAPTED TO ABUT AGAINST THE FLAT UPPER SURFACE OF THE FLANGE, THE LOWER INNER SURFACE OF THE CAP FORMING THE TOP SURFACE OF SAID MIXING CHAMBER, A SMALL PASSAGEWAY EXTENDING FROM SAID LOWER INNER SURFACE THROUGH SAID CAP TO ITS OUTER UPPER SURFACE TO PROVIDE AN ATOMIZING ORIFICE.