Carburetor

Claim 1

A CARBURETOR COMPRISING A BODY, A FUEL AND AIR MIXTURE CONDUIT THROUGH SAID BODY, SAID BODY FORMED WITH A FUEL CHAMBER, SAID MIXTURE CONDUIT HAVING AN INLET AND AN OUTLET AND A RESTRICTED PORTION INTERMEDIATE SAID INLET AND OUTLET, A FUEL INLET AND A FUEL PASSAGE EXTENDING FROM SAID FUEL INLET TO SAID FUEL CHAMBER, AN INLET VALVE IN SAID FUEL PASSAGE BETWEEN SAID FUEL INLET AND SAID FUEL CHAMBER, A MAIN FUEL NOZZLE WITHIN SAID CONDUIT RESTRICTED PORTION, SAID BODY HAVING AN ANNULAR SPACE AROUND THE NOZZLE OPENING INTO SAID RESTRICTED PORTION, SAID BODY HAVING A FUEL CONNECTION FROM SAID FUEL CHAMBER TO SAID MAIN FUEL NOZZLE, MEANS FOR OPERATING SAID INLET VALVE, SAID OPERATING MEANS INCLUDING A DIAPHRAGM OPERATIVELY CONNECTED TO SAID INLET VALVE AND SEALED AT ITS PERIPHERY TO SAID BODY ACROSS SAID FUEL CHAMBER TO FORM A WALL THEREOF, SPRING MEANS BIASING SAID INLET VALVE IN A VALVE CLOSING DIRECTION AND SAID DIAPHRAGM IN A DIRECTION TO ENLARGE SAID FUEL CHAMBER, MEANS FORMING A SINGLE CLOSED AIR CHAMBER ENCLOSING THE SIDE OF SADI DIAPHRAGM OPPOSITE TO SAID FUEL CHAMBER, SAID BODY INCLUDING A FIRST PASSAGE CONNECTING SAID MIXTURE CONDUIT INLET TO SAID AIR CHAMBER WHEREBY SAID DIAPHRAGM IN RESPONSIVE TO CONDUIT INLET AIR PRESSURE TO MAINTAIN FUEL IN SAID FUEL CHAMBER AT A CONSTANT PRESSURE, AND A SECOND PASSAGE IN SAID BODY INTERCONNECTING SAID ANNULAR SPACE AND SAID FIRST PASSAGE WHEREBY SAID DIAPHRAGM IN RESPONSIVE TO THE DROP IN AIR PRESSURE AT SAID CONDUIT RESTRICTIVE PORTION TO VARY THE CONSTANT PRESSURE OF FUEL IN SAID FUEL CHAMBER DIRECTLY IN RESPONSE TO CHANGES OF AIR PRESSURE AT SAID NOZZLE.