Bottle filler valve mechanism

Claim 1

A VALVE MECHANISM FOR A COUNTERPRESSURE BOTTLE FILLER HAVING A FILLER BOWL ADAPTED TO CONTAIN A LIQUID AND A GAS UNDER PRESSURE AND HAVING A DISCHARGE THEREIN COMPRISING: A MOABLE STEM MOUNTED IN THE DISCHARGE OPENING AND HAVING A FILL HEIGHT PORT IN THE LOWER PART THEREOF; A LIQUID CONTROL VALVE MOUNTED ON SAID STEM AND ADAPTED TO CONTROL FLOW OF LIQUID FROM THE BOWL THROUGH THE DISCHARGE OPENING; A GAS CONTROL VALVE ON SAID STEM TO CONTROL FLOW OF GAS THROUGH SAID STEM; AND FILL HEIGHT CONTROL MEANS FOR REMOVING ALL LIQUID FROM THE BOTTLE ABOVE THE LEVEL OF SAID FILL HEIGHT PORT IN SAID STEM, SAID FILL HEIGHT CONTROL MEANS INCLUDING A SOURCE OF GAS UNDER PRESSURE COMMUNICATING WITH THE DISCHARGED OPENING AND SAID FILL HEIGHT PORT, A VALVE FOR CONTROLLING FLOW FROM SAID SOURCE TO THE DISCHARGE OPENING, AND A CHECK VALVE MEANS ON THE SAID STEM FOR PERMITTING FLOW OF GAS AND LIQUID FROM THE DISCHARGE OPENING AND BOTTLE THROUGH SAID STEM AND INTO THE FILLER BOWL, SAID GAS PRESSURE AST SAID SOURCE BEING IN EXCESS OF THE GAS PRESSURE IN SAID FILLER BOWL, AND SAID CHECK VALVE MEANS INCLUDING A MOVABLE CHECK VALVE MEMBER AND A HOOD MEMBER MOUNTED ON SAID STEM WEITH SAID HOOD PARTIALLY SUBMERGED IN THE LIQUID IN THE BOWL AND POSITIONED TO ENCLOSE SAID CHECK VALVE MEMBER, SAID HOOD HAVING AN OPENING IN THE UPPER PORTION THEREOF.