Equalizing system for gaseous fuel feeds for internal combustion engines

Claim 1

IN GASEOUS FUEL FEED SYSTEMS FOR INTERNAL COMBUSTION ENGINES COMPRISING A CARBURETER HAVING AN AIR AND MIXTURE PASSAGE WITH AN AIR INTAKE, A VENTURI THROAT AND CONNECTION TO THE ENGINE INTAKE MANIFOLD, A GAS PRESSURE REGULATOR HAVING A DELIVERY CHAMBER, A GAS DELIVERY PASSAGE FROM SAID DELIVERY CHAMBER TO THE VENTURI THROAT, A PRESSURE CONTROLLING DIAPHRAGM -VALVE SYSTEM ASSOCIATED WITH THE DELIVERY CHAMBER, ONE FACE OF THE DIAPHRAGM BEING EXPOSED TO THE PRESSURE IN THE DELIVERY CHAMBER, A PRESSURE ESTABLISHING REFERENCE CHAMBER AT THE FACE OF THE DIAPHRAGM OPPOSITE SAID ONE FACE ANM WHEREIN VARIATIONS OF PRESSURE CAUSE CORRESPONDING VARIATIONS OF PRESSURE IN THE DELIVERY CHAMBER, AND A BALANCE PASSAGE CONNECTING THE AIR INTAKE OF THE CARBURETER WITH SAID REFERENCE CHAMBER NORMALY MAINTAINING PRESSURE IN SAID REFERENCE CHAMBER EQUAL TO THAT IN THE AIR INTAKE; IMPROVEMENT MEANS PREVENTING PRESSURE PULSATIONS WHICH OCCUR IN SAID AIR INTAKE AND ARE COMMUNICATED BY THE BALANCE PASSAGE TO THE