Valve structure for pressurized spray package

Claim 1

A VALVE STRUCTURE FOR A PRESSURIZED SPRAY PACKAGE OF THE TYPE HAVING A COVER MEMBER WITH A VALVE HOUSING AND DIP TUBE SECURED TO THE BOTTOM THEREOF AND CLAMPING AN ANNULAR RESILIENT GASKET IN THE COVER MEMBER WITH THE CENTER OPENING OF THE GASKET ALIGNED WITH A HOLE IN THE COVER MEMBER, A RECIPROCABLE SPRING PRESSED PLUNGER IN THE HOUSING HAVING AN UPPER ANNULAR VALVE SEAT SEALINGLY ENGAGED AGAINST THE GASKET AND A CYLINDRICAL SOCKET OPENING TO THE UPPER END OF THE PLUNGER COAXIAL WITH THE VALVE SEAT AND ALIGNED WITH THE CENTER OPENING AND HOLE, AND HAVING A REMOVABLE SPRAY HEAD WITH A DEPENDING INTEGRAL CYLINDRICAL HOLLOW STEM ENGAGED INTO THE SOCKET THROUGH THE GASKET SEALED BY AND SLIDABLE RELATIVE TO THE GASKET WITH A SIDE SLOT THROUGH THE WALL OF THE STEM, SAID SLOT BEING OPEN CLEAN THROUGH FOR SUBSTANTIALLY ITS ENTIRE LENGTH TO PROVIDE COMMUNICATION BETWEEN THE HOLLOW STEM AND THE HOUSING WHEN THE USER PRESSES THE SPRAY HEAD AND PLUNGER DOWN AGAINST THE SPRING PRESSURE TO UNSEAT THE VALVE SEAT SO THAT PRESSUREIZED PRODUCT MAY FLOW PAST THE VALVE SEAT AND INTO THE SLOT; SAID VALVE STRUCTURE COMPRISING AN ANNULAR POCKET IN THE PLUNGER RADIALLY INWARD OF THE VALVE SEAT AND EXTENDING DOWNWARD THEREFROM THEREBY SPACING THE STEM FROM THE VALVE SEAT, SAID POCKET BEING GENERALLY RECTANGULAR IN CROSS-SECTION AT ITS PERIPHERY AND THE SLOT OF THE STEM TERMINATING AT ITS UPPER END IN THE POCKET SO THAT SAID POCKET AND SAID SLOT ARE IN CONSTANT COMMUNICATION WHEN SAID SPRAY HEAD IS SEATED IN SAID SOCKET.