Carburetor

Claim 1

A CARBURETOR COMPRISING A BODY, A FUEL AND AIR MIXTURE CONDUIT THROUGH SAID BODY, SAID BODY FORMED WITH A FUEL PUMPING CHAMBER AND AN INLET AND AN OUTLET CONNECTED THERETO, A PUMP DIAPHRAGM FIXED TO SAID BODY ACROSS SAID PUMPING CHAMBER TO FORM A MOVABLE WALL THEREOF TO PUMP FUEL THROUGH SAID PUMPING CHAMBER; MEANS FORMING A FUEL CHAMBER WITHIN SAID BODY, A FUEL PASSAGE IN SAID BODY EXTENDING FROM SAID PUMPING CHAMBER OUTLET TO SIAD FUEL CHAMBER, AN OUTLET VALVE IN SAID PASSAGE ADJACENT TO SAID PUMPING CHAMBER, AN INLET VALVE IN SAID FUEL PASSAGE BETWEEN SAID OUTLET VALVE AND SAID FUEL CHAMBER, SAID BODY HAVING A FUEL CONNECTION BETWEEN SAID FUEL CHAMBER AND SAID MIXTURE CONDUIT, SAID BODY FORMED WITH A SUBSTANTIALLY ANNULAR CAVITY ENCIRCLING SAID FUEL PASSAGE BETWEEN SAID OUTLET AND INLET VALVES, AND A RESILIENT PULSE DIAPHRAGM PORTION EXTENDING ACROSS AND SEPARATING SAID CAVITY FROM SAID FUEL PASSAGE, AND MEANS SEALING SAID RESILIENT DIAPHRAGM PORTION TO SAID CARBURETOR BODY, SAID FUEL PASSAGE EXTENDING THROUGH SAID DIAPHRAGM PORTION, WHEREBY A CLOSED PULSE CHAMBER IS FORMED BETWEEN SAID DIAPHRAGM PORTION AND SAID CAVITY TO DAMPEN PUMP PUSLATIONS.