Device for feeding a combustion motor with liquified petroleum gas

Claim 1

APPARATUS FOR SUPPLYING LIQUIFIED PETROLEUM GAS FROM A SUPPLY TANK TO A CARBURETOR HAVING A VENTURI, SAID APPARATUS COMPRISING A HIGH PRESSURE CONTROL VALVE, A FIRST CONDUIT CONNECTING SAID SUPPLY TANK WITH SAID HIGH PRESSURE CONTROL VALVE, A LOW PRESSURE CONTROL VALVE, A SECOND CONDUIT CONNECTING SAID HIGH PRESSURE CONTROL VALVE WITH SAID LOW PRESSURE CONTROL VALVE, A CONTROL CHAMBER ADJOINING SAID LOW PRESSURE CONTROL VALVE, A FIRST MEMBRANE IN SAID CONTROL CHAMBER, MEANS COUPLING SAID FIRST MEMBRANE WITH SAID LOW PRESSURE CONTROL VALVE. A SECOND MEMBRANE IN SAID CONTROL CHAMBER, THE SAID FIRST MEMBRANE DIVIDING SAID CONTROL CHAMBER, IN A FIRST COMPARTMENT BETWEEN SAID FIRST MEMBRANE AND SAID LOW PRESSURE CONTROL VALVE AND COMMUNICATING THROUGH THE LATTER WITH SAID SECOND CONDUIT, THE SAID FIRST AND SECOND MEMBRANES DEFINING A SECOND COMPARTMENT, SAID CONTROL CHAMBER BEING PROVIDED WITH A THIRD COMPARTMENT OUTSIDE SAID SECOND MEMBRANE AND IN COMMUNICATION WITH THE ATMOSPHERE, MEANS COUPLING SAID SECOND MEMBRANE WITH SAID FIRST MEMBRANE AND AMPLIFYING THE PRESSURE EXERTED ON SAID SECOND MEMBRANE WHILE TRANSFERRING THE SAME TO SAID FIRST MEMBRANE, A THIRD CONDUIT CONNECTING SAID FIRST COMPARTMENT WITH SAID CARBURETOR, AND A FOURTH CONDUIT CONNECTING SAID SECOND COMPART-