Feeding of air for combustion in supercharged internal combustion engines

Claim 1

IN AN INTERNAL COMBUSTION ENGINE OF THE TYPE INCLUDING AT LEAST ONE CYLINDER HAVING A PISTON THEREIN, A CRANKSHAFT, A CAM SHAFT, PUSH RODS, DRIVING GEAR ASSOCIATED WITH SAID CAM SHAFT, ROCKER ARMS ACTUATED THEREBY, AND SUITABLE INTAKE AND EXHAUST VALVES ASSOCIATED WITH EACH CYLINDER AND ACTUATED BY SAID ROCKET ARMS, THE COMBINATION WITH SAID ENGINE COMPRISING A FIRST INTAKE VALVE DISPOSED IN EACH OF SAID CYLINDERS FOR INTRODUCING PRESSURIZED AIR THERETO, A SECOND INTAKE VALVE DISPOSED IN EACH OF SAID CYLINDERS FOR INTRODUCING ATMOSPHERIC AIR THERETO, AT LEAST ONE OF SAID AIR CURRENTS CONTAINING CARBURATED FUEL, MEANS OPENING SAID FIRST INTAKE VALVE NOT LATER THAN SIMULTANEOUSLY WITH SAID SECOND INTAKE VALVE BEFORE SAID PISTON ATTAINS ITS UPPER DEAD CENTER PRIOR TO ITS SUCTION STROKE, MEANS CLOSING SAID SECOND VALVE WHEN THE INTAKE VACUUM OF THE ATMOSPHERIC AIR AT THE NECK OF SAID SECOND VALE SUBSTANTIALLY EQUALS THE PRESSURE WITHIN SAID CYLINDER, MEANS CLOSING SAID FIRST VALVE AFTER THE COMPLETION OF SAID SUCTION STROKE AND MEANS INSURING THE ADMISSION OF PRESSURIZED AIR AND ATMOSPHERIC AIR IN SUBSTANTIALLY EQUAL VOLUMES AT LEAST FOR THE PERIOD WHEN SAID SECOND VALVE IS IN A FULLY OPENED POSITION.