Automatic liquid level control means for a sewerage wet well

Claim 1

A SEWAGE HANDLING SYSTEM WHICH COMPRISES THE COMBINATION OF A SEWAGE WET WELL HAVING AN INLET AND A DISCHARGE OUTLET; A FLEXIBLE CONDUIT VALVE COUPLED TO SAID DISCHARGE OUTLET FOR DEFINING A FLUID FLOW ORIFICE OF A CROSS-SECTION INVERSELY PRPORTIONAL TO AN APPLIED PRESSURE; AIR COMPRESSOR MEANS; SIGNAL DEVELOPING MEANS COUPLED TO SAID COMPRESSOR MEANS FOR DEVELOPING AN AIR PRESSURE PROPORTIONAL TO THE FLUID DEPTH IN SAID WET WELL; AIR REVERSING PRESSURE BOOSTING RELAY MEANS HAVING INPUT, OUTPUT AND CONTROL PORTS, FOR TRANSLATING AN INPUT PORT PRESSURE TO SAID OUTPUT PORT IN A MAGNITUDE; INVERSELY PROPORTIONAL TO A CONTROL PRESSURE APPLIED TO SAID CONTROL PORT; VOLUME BOOSTING RELAY MEANS HAVING INPUT, OUTPUT AND CONTROL PORTS FOR TRANSLATING AN INPUT PORT PRESSURE TO SAID OUTPUT PORT IN A MAGNITUDE PROPORTIONAL TO A CONTROL PRESSURE APPLIED TO SAID CONTROL PORT; MEANS FOR COUPLING SAID INPUT PORTS OF BOTH OF SAID RELAY MEANS TO SAID AIR COMPRESSOR MEANS; MEANS FOR COUPLING SAID CONTROL PORT AND SAID OUTPUT PORT OF SAID REVERSING RELAY MEANS TO RESPECTIVELY SAID SIGNAL DEVELOPING MEANS AND SAID CONTROL PORT OF SAID SECOND RELAY MEANS; AND MEANS FOR COUPLING THE OUTPUT OF SAID SECOND RELAY MEANS TO SAID FLEXIBLE CONDUIT VALVE FOR EFFECTING A CONTINUOUS VARIATION IN THE DISCHARGE FLOW RATE FROM SAID CONDUIT VALVE IN PROPORTION TO THE FLUID DEPTH IN SAID WET WALL.