Gaseous fuel feed systems for internal combustion engines

Claim 1

IN GASES FUEL FEED SYSTEMS FOR INTERNAL COMBUSTION ENGINES AND THE LIKE, THE CONBINATION OF AN AIR AND MIXTURE PASSAGE HAVING AN OUTLET TO THE ENGINE INTAKE MANIFOLD, AN AIR INTAKE AND A VENTURI THRO AT BETWEEN INTAKE AMD OUTLET, A PERMANENT OBSTRUCTION IN THE AIR INTAKE POSITVELY IMPOSING A PRESSURE REDUCTION WITH RELATION TO ATMOSPHERIC PRESSURE ON THE AIR PASSING THERETHROUGH AT MINIMUM FLOW, A GAS PRESSURE REGULATOR COMPRISING A PRESSURE REGULATING VALVE CONTROLLING GAS FLOW FROM A INITIAL INLET TO A DELIVERY CHAMBER, A DIAPHRAGMVALVE SYSTEM INCLUDING SAID VALVE AND A VALVE OPERATING DIAPHRAGM HAVING ONE FACE EXPOSED TO FLUID PRESSURE IN THE DELIVERY CHAMBER AND THE OTHER FACE EXPOSED TO FLUID PRESSURE IN A REFERENCE CHAMBER, THE PRESSURE IN THE DELIVERY CHAMBER EXERTING A FORCE ON SAID DIAPHRAGM TENDING TO MOVE IT IN A VALVE CLOSING DIRECTION AND THE FLUID PRESSUREIN THE REFERENCE CHAMBER EXERTING A FORCE TO THE DIAPHRAGM TENDING TO MOVE IT IN A VALVE OPENING DIRECTION, MEANS APPLYING AN ADDITIONAL DEFINITE FORCE TO TH DIAPHRAGM-VALVE SYSTEM WHEREBY THE VALVE IS NORMALLY CLOSED WITH A DEFINITE PRESSURE WHEN FLUID PRESSURES ON OPPOSITE FACES OF THE VALVE APERATING DIAPHRAGM ARE EQUAL, A GAS DELIVERY PASSAGE LEADING FROM THE DELIVERY CHAMBER TO THE VENTURI THROATH, A MEANS WHICH PICKS UP THE PRESSURE EXISTENT IN THE AIR AND MIXTURE