Aspirator for a carburetor

Claim 1

IN A CARBURETOR HAVING AN AIR PASSAGEWAY DEFINED BY AN AIR PASSAGEWAY WALL ONE END OF WHICH IS UPSTREAM END AND THE OTHER A DOWNSTREAM END, A FUEL CONDUIT ADAPTED TO SUPPLY FUEL TO SAID AIR PASSAGEWAY EXTENDING INTO SAID AIR PASSAGEWAY, SAID FUEL CONDUIT HAVING A TERMINUS COAXIALLY DISPOSED WITH RESPECT TO SAID AIR PASSAGEWAY AND FACING IN A DOWNSTREAM DIRECTION THEREIN, THE IMPROVEMENT COMPRISING ASPIRATOR MEANS DISPOSED AT SAID FUEL CONDUIT TERMINUS, SAID ASPIRATOR MEANS COAXIALLY DISPOSED WITH RESPECT TO SAID AIR PASSAGEWAY AND SPACED APART FROM THE WALL OF SAID AIR PASSAGEWAY TO PROVIDE AN ANNULAR SPACE BETWEEN THE WALL OF SAID AIR PASSAGEWAY AND THE EXTERIOR OF SAID ASPIRATOR MEANS SO THAT AIR FLOWING IN SAID AIR PASSAGEWAY FLOWS PAST THE EXTERIOR OF SAID ASPIRATOR MEANS, AIR INLET MEANS IN SAID ASPIRATOR MEANS OPEN TO SAID PASSAGEWAY ADAPTED TO CHANNEL A PORTION OF THE AIR FLOWING IN SAID AIR PASSAGEWAY INTO SAID ASPIRATOR MEANS, SWIRLING MEANS IN SAID ASPIRATOR MEANS ADAPTED TO SWIRL THE AIR ENTERING THROUGH SAID AIR INLET MEANS, SAID ASPIRATOR MEANS ADAPTED SO THAT THE SWIRLING AIR ASPIRATES FUEL THROUGH SAID FUEL CONDUIT TO FORM A FUEL-AIR MIXTURE, DISCHARGE MEANS IN SAID ASPIRATOR MEANS OPENING INTO SAID AIR PASSAGEWAY IN A DOWNSTREAM DIRECTION ADAPTED FOR THE DISCHARGE OF A SWIRLING SPRAY INTO SAID AIR PASSAGEWAY.