Gas separation pump for liquid circulating systems

Claim 1

A CENTRIFUGAL PUMP PARTICULARY ADAPTED TO SEPARATE GASES ENTRAINED IN THE LIQUID PUMPED THEREBY, SAID PUMP COMPRISING A HOUSING HAVING A DYNAMIC SEPARATING CHAMBER AND A PUMP DISCHARGE CHAMBER, A PUMP IMPELLER ROTATING IN SAID DYNAMIC SEPARATING CHAMBER, SUPPLY AND DISCHARGE PASSAGES TO SAID HOUSING, MEANS DEFINING A FLUID COLLECTING AND GAS COLLECTING STATIC CHAMBER FLANKING SAID PUMP DISCHARGE CHAMBER, A PARTITION BETWEEN SAID PUMP DISCHARGE CHAMBER AND SAID FLUID COLLECTING AND GAS COLLECTING STATIC CHAMBER, AND MEANS PROVIDING A PASSAGEWAY FROM SAID DYNAMIC SEPARATING CHAMBER TO SAID FLUID COLLECTING AND GAS COLLECTING STATIC CHAMBER FOR THE MOVEMENT OF GASES SO AS TO SEPARATE SAID GASES FROM THE PUMPED FLUID SAID MEANS COMPRISING A HOLLOW TUBE COAXIALLY ARRANGED WITH RESPECT TO SAID IMPELLER AND EXTENDIND FROM SAID STATIC CHAMBER TO A POINT CLOSE TO SAID IMPELLER, MEANS IN SAID PARTITION FOR THE MOVEMENT OF GASES INTO SAID FLUID COLLECTING AND GAS COLLECTING STATIC CHAMBER, SAID HOLLOW TUBE PROVIDING A RETURN PASSAGEWAY WITHIN SAID PUMP HOUSING THROUGH WHICH LIQUID WHICH HAS BEEN DETRAINED OF GAS MAY MOVE.