Delivering of measured quantities of pressurised liquids

Claim 1

APPARATUS FOR DELIVERING MEASURED QUANTITIES OF PRESSURIZED BEVERAGES FROM A BULK STORAGE VESSEL AT ONE LOCATION TO A DISPENSE TAP REMOTE FROM SAID LOCATION SAID APPARATUS COMPRISING: A METERING PUMP ADJACENT SAID VESSEL AT SAID ONE LOCATION, SAID PUMP HAVING A DIAPHRAGM DIVIDING THE PUMP INTO A BEVERAGE CHAMBER AND A GAS CHAMBER; A BEVERAGE DISPENSING TAP HAVING A COIL OPENED, NORMALLY CLOSED VALVE AND A NORMALLY OPEN START SWITCH; CONDUIT MEANS, INCLUDING ONE WAY VALVES, CONNECTING SAID STORAGE VESSEL TO SAID BEVERAGE CHAMBER AND SAID BEVERAGE CHAMBER TO SAID DISPENSE VALVE FOR UNIDIRECTIONAL FLOW OF SAID BEVERAGE TO SAID TAP; GAS PRESSURE SUPPLY MEANS ADJACENT SAID VESSEL AT SAID ONE LOCATION INCLUDING A SOURCE, A THROTTLING VALVE AND A COIL ACTUATED THREE WAY VALVE FOR SUPPLYING GAS TO SAID GAS CHAMBER AND EXHAUSTING SAID CHAMBER; A NORMALLY OPEN, DIAPHRAGM CLOSED STOP SWITCH, IN SAID GAS CHAMBER, FOR SENSING THE FULL DISTENTION OF SAID DIAPHRAGM UNDER THE INFLUENCE OF BEVERAGE IN SAID BEVERAGE CHAMBER; A NORMALLY CLOSED, GAS PRESSURE OPENED SWITCH IN SAID GAS CHAMBER, FOR SENSING A PREDETERMINED GAS PRESSURE THEREIN SUFFICIENT TO FULLY DISTEND SAID DIAPHRAGM TO EMPTY SAID BEVERAGE CHAMBER, AND AN ELECTRIC CONTROL CIRCUIT INCLUDING A SOURCE OF CURRENT, THE COILS OF SAID VALVES, SAID GAS PRESSURE OPENED PHRAGM CLOSED SWITCH, SAID GAS PRESSURE OPENED SWITCH AND A HOLDING RELAY; THE CLOSING OF SAID START SWITCH CAUSING SAID DISPENSE VALVE TO REMAIN OPEN UNTIL SAID GAS PRESSURE SWITCH INDICATES AN EMPTY BEVERAGE CHAMBER AND SAID DISPENSE VALVE NOT BEING RE-OPENABLE UNTIL SAID DIAPHRAGM CLOSED SWITCH INDICATES A COMPLETELY REFILLED BEVERAGE CHAMBER.