Flow control system for pressurized aircraft compartment

Claim 1

IN AN AIR CONDITIONING AND PRESSURIZING SYSTEM FOR AN AIRCRAFT COMPARTMENT WHICH INCLUDES A SUPPLY CONDUIT FOR THE COMPARTMENT CONNECTED WITH A SOURCE OF TEMPERATURE AND PRESSURE CONDITIONED AIR AND AUTOMATICALLY OPERABLE DISCHARGE VALVE MEANS ASSOCIATED WITH THE COMPARTMENT AND MOVABLE BETWEEN OPEN AND CLOSED POSITIONS FOR CONTROLLING THE OUTFLOW OF AIR FROM THE COMPARTMENT AND THUS REGULATING COMPARTMENT PRESSURE, THE COMBINATION OF OF A VALVE MOVABLE BETWEEN OPEN AND CLOSED POSITIONS IN SAID SUPPLY CONDUIT AND CONTROL MEANS THEREFOR, THE SAID CONTROL MEANS COMPRISING TEMPERATURE RESPONSIVE MEANS IN SAID COMPARTMENT, SENSING MEANS FOR ASCERTAINING THE POSITION OF SAID DISCHARGE VALVE MEANS, AND MEANS OPERABLE AUTOMATICALLY RESPONSIVE TO SAID TEMPERATURE RESPONSIVE MEANS AND POSITION SENSITIVE MEANS TO ADJUST THE POSITION OF SAID SUPPLY CONDUIT VALVE SO THAT AIR FLOW THERETHROUGH IS VARIED AS REQUIRED TO PROVIDE FOR A DESIRED TEMPERATURE CONDITION IN SAID COMPARTMENT AND AT THE SAME TIME LIMIT CLOSING MOVEMENT OF SAID DISCHARGE VALVE MEANS AT A PRESELECTED SLIGHTLY OPEN POSITION THEREOF, SAID LAST MENTIONED AUTOMATICALLY OPERABLE MEANS SERVING TO SATISFY WHICHEVER OF SAID TEMPERATURE RESPONSIVE AND POSITION SENSITIVE MEANS CALLS FOR THE MOST OPEN POSITION OF SAID SUPPLY CONDUIT VALVE.