Anti-smog carburetor for internal combustion engines

Claim 1

IN A CARBURETOR, THE COMBINATON COMPRISING: MEANS FOR ADJUSTING THE AIR INTAKE OF SAID CARBURETOR CORRESPONDING TO A DESIRED NORMAL ENGINE SPEED, PRIMARY VARIABLE FUEL FLOW CONTROL MEANS RESPONSIVE TO SAID AIR ADJUSTING MEANS FOR MAINTAINING A NORMALLY CONSTANT FUEL-TO-AIR RATIO UNDER CONDITIONS OF NORMAL ENGINE OPERATION, MEANS RESPONSIVE TO SAID PRIMARY VARIABLE CONTROL MEANS FOR METERING THE FUEL AT SAID DESIRED NORMAL ENGINE SPEED, MEANS FOR DISPENSING SAID METERED FUEL TO SAID INTAKE AIR ABOUT THE PERIPHERY OF SAID FUEL DISPENSING MEANS, SAID FUEL DISPENSING MEANS INCLUDING A FORAMINOUS WALL AND A BASE PORTION, SAID WALL AND BASE PORTION DEFINING A CAVITY, SAID CAVITY BEING POSITIONED IN SAID CARBURETOR IN A MANNER THAT LIQUID FUEL FROM SAID FUEL METERING MEANS IS DISPENSED THROUGH SAID FORAMINOUS WALL, WHEREBY SAID FUEL IS ATOMIZED AND CHARGED INTO SAID INTAKE AIR BY A PRESSURE DIFFERENTIAL ACROSS SAID FUEL DISPENSING MEANS TO PROVIDE A NEAR HOMOGENEOUS MIXTURE OF FUEL AND AIR FOR PRESENTATION TO SAID ENGINE, SECONDARY VARIABLE FUEL FLOW CONTROL MEANS COOPERATING WITH SAID PRIMARY VARIABLE FUEL FLOW CONTROL MEANS FOR MAINTAINING ONE OF EITHER AN ABNORMAL CONSTANT OR VARIABLE INCREASED FUEL-TO-AIR RATIO UNDER CONDITIONS OF ABNORMAL ENGINE OPERATION, MEANS FOR PROVIDING A VARIABLE POSITIVE PRESSURE IN SAID CARBURETOR COOPERATING WITH SAID PRIMARY AND SAID SECONDARY FUEL FLOW CONTROL MEANS TO REDUCE SAID FUEL FLOW IN RESPONSE TO A REDUCED PRESSURE UNDER DECELERATING ENGINE OPERATION THEREBY TO REDUCE THE FUEL-AIR RATIO AND TO INCREASE SAID FUEL FLOW IN RESPONSE TO AN INCREASED PRESSURE UNDER ACCELERATING ENGINE OPERATION TO INCREASE SAID FUEL-AIR RATIO, WHEREBY THE FUEL-AIR RATIO IS THUS CORRELATED TO THE NEEDS OF SAID ENGINE OPERATION UNDER VARIOUS OPERATING CONDITIONS TO PROVIDE INCREASED FUEL ECONOMY AND TO LESSEN EMISSION OF UNBURNED HYDROCARBONS IN THE EXHAUST OF SAID ENGINE.