Apparatus for supplying gaseous fuel to an internal combustion engine

Claim 1

APPARATUS FOR SUPPLYING GASEOUS FUEL FROM A CONTAINER OF PRESSURIZED GAS TO A FOUR-STROKE-CYCLE INTERNAL COMBUSTION ENGINE OF THE TYPE HAVING AN AIR-FUEL INTAKE SYSTEM INCLUDING DAMPER MEANS FOR CONTROLLING THE FLOW OF AIR THROUGH SAID SYSTEM AND A RESTRICTOR UPSTREAM OF SAID DAMPER, SAID APPARATUS COMPRISING A FUEL-FLOW REGULATOR INCLUDING A HOUSING, FIRST AND SECOND FLEXIBLE DIAPHRAGMS EXTENDING ACROSS AND DIVIDING THE SPACE INSIDE SAID HOUSING INTO FIRST, SECOND AND THIRD COMPARTMENTS, SAID FIRST DIAPHRAGM SEPARATING SAID FIRST AND SECOND COMPARTMENTS AND SAID SECOND DIAPHRAGM SEPARATING SAID SECOND AND THIRD COMPARTMENTS, MEANS DEFINING A PASSAGE FOR CONDUCTING GAS FROM SAID CONTAINER TO SAID FIRST HOUSING COMPARTMENT, VALVE MEANS IN SAID PASSAGE COUPLED TO SAID FIRST DIAPHRAGM FOR CONTROLING THE FLOW OF GAS THROUGH SAID PASSAGE IN ACCORDANCE WITH THE POSITION OF SAID FIRST DIAPHRAGM, MEANS DEFINING A SECOND PASSAGE COMMUNICATING BETWEEN SAID FIRST AND SAID SECOND COMPARTMENT, VALVE MEANS IN SAID SECOND PASSAGE COUPLED TO SAID SECOND DIAPHRAGM FOR OPENING AND CLOSING SAID SECOND PASSAGE IN RESPONSE TO MOVEMENT OF SAID SECOND DIAPHRAGM, A TUBE COMMUNICATING WITH SAID SECOND COMPARTMENT, AND MEANS FOR COUPLNG SAID TUBE TO SAID INTAKE SYSTEM AT A POINT INTERMEDIATE SAID DAMPER MEANS AND SAID RESTRICTOR, SAID HOUSING HAVING AN OPENING THEREIN COMMUNICATING SAID THIRD COMPARTMENT WITH ATMOSPHERE.