Liquid dispensing device and composition therefor

Claim 1

SELF-PROPELLED LIQUID DISPENSING DEVICE COMPRISING A GAS-TIGHT CONTAINER HAVING RELATIVELY EASILY RUPTURABLE WALLS, A CONTAINED 3-PHASE FLUID SYSTEM COMPRISING A LIQUID MEDIUM TO BE DISPENSED AND A PROPELLANT PRESENT IN BOTH GASEOUS AND LIQUID FORM AND WHICH IN SAID LIQUID FORM IS SUBSTANTIALLY IMMISCIBLE WITH AND OF GREATER SPECIFIC GRAVITY THAN SAID LIQUID MEDIUM, SAID PROPELLANT HAVING A BOILING POINT NOT GREATER THAN ABOUT 20* C. AND BEING PRESENT IN AN AMOUNT SUCH TAHT WHEN ENTIRELY IN THE GASEOUS STATE AND CALCULATED AT 0* C. AND ONE ATMOSPHERE ABSOLUTE PRESSURE IT WILL OCCUPY A VOLUME FROM ABOUT 1.2 TO ABOUT 5 TIMES THE VOLUME OF THE CONTAINER, THE GASEOUS PHASE OF SAID PROPELLANT BEING UNDER PRESSURE, ABOVE SAID LIQUID MEDIUM, A CONDUIT HAVING A PASSAGE EXTENDING FROM A POINT WITHIN SAID CONTAINER ABOVE, AND NEAR, THE BOTTOM OF SAID LIQUID MEDIUM TO A LOW PRESSURE DISCHARGE ORIFICE AT A POINT OUTSIDE OF SAID CONTAINER, AND MEANS FOR CONTROLLING THE FLOW OF FLUID FROM WITHIN SAID CONTAINER THROUGH SAID CONDUIT PASSAGE TO SAID DISCHARGE ORIFICE.