Fuel injection system

Claim 1

IN A DISTRIBUTOR TYPE FUEL INJECTION PUMP THE COMBINATION COMPRISING: A PUMP HOUSING INCLUDING A BORE, A PLURALITY OF VALVELESS DELIVERY PASSAGES ADAPTED TO CONNECTION TO FUEL DELIVERY LINES, RESPECTIVELY, AN INJECTION PRESSURE CHAMBER, AND A SUPPLY CHAMBER, MEANS SUPPLYING FUEL TO SAID SUPPLY CHAMBER AND MAINTAINING THE LATTER AT A PRESSURE SUBSTANTIALLY ABOVE ATMOSPHERIC PRESSURE, MEANS FOR CYCLICALLY TRANSFERRING FUEL FROM SAID SUPPLY CHAMBER TO SAID INJECTION PRESSURE CHAMBER AND FOR PRESSURIZING IT TO AN INJECTION PRESSURE INCLUDING A RECIPROCABLE PUMP PLUNGER IN SAID BORE, AND ROTATING VALVE MEANS IN SAID HOUSING BETWEEN SAID INJECTION PRESSURE CHAMBER AND SAID DELIVERY PASSAGES CYCLICALLY AND INDIVIDUALLY CONNECTING SAID DELIVERY PASSAGES TO SAID INJECTION PRESSURE CHAMBER DURING THE PUMPING STROKE OF SAID PLUNGER AND PASSAGE MEANS IN SAID VALVE MEANS INDEPENDENT OF SAID SECOND NAMED MEANS CYCLICALLY CONNECTING SAID DELIVERY PASSAGES IN CONTINUOUS FREE FLOW FLUID COMMUNICATION WITH SAID SUPPLY CHAMBER DURING A MAJOR PORTION OF THE TIME THEY ARE DISCONNECTED FROM SAID INJECTION PRESSURE CHAMBER.