Metering button cap for use with pressurized containers

Claim 1

A METERING BUTTON CAP FOR USE WITH A PRESSURIZED CONTAINER UTILIZING A NON-SOLUBLE GASEOUS PROPELLANT AND WHICH IS ADAPTED TO SEALINGLY AND OPERATIVELY ENGAGE THE OUTER END OF A HOLLOW DEPRESSIBLE VALVE STEM OF A CONTINUOUS FLOW VALVE PLACED IN THE CONTAINER, SAID BUTTOM CAP HAVING THEREIN A CHAMBER OF PREDETERMINED SIZE, A VALVE STEM ENGAGING PORTION HAVING A CONNECTING PASSAGE THEREIN LEADING TO SAID CHAMBER AND ADAPTED TO SEALINGLY ENGAGE THE EXTERIOR OF A HOLLOW STEM TO CONNECT THE INTERIOR THEREOF WITH SAID CHAMBER, A DISCHARGE PASSAGE EXTENDING THROUGH SAID CAP INTO SAID CHAMBER ADAPTED TO CONNECT SAID CHAMBER WITH ATMOSPHERE, MOVABLE PLUNGER MEANS IN SAID CHAMBER, RESILIENT MEANS URGING SAID PLUNGER MEANS TO MOVE IN ONE DIRECTION, AND CLOSURE MEANS CARRIED IN SAID CAP OPERABLE BY DEPRESSION OF SAID CAP FOR CLOSING OFF SAID DISCHARGE PASSAGE FROM SAID CHAMBER.