Pressure reducer for liquefied gas containers

Claim 1

IN A LIGHTER, THE COMBINATION OF A CONTAINER FOR LIQUEFIED GAS, A CAP ENCLOSING AN EXPANSION CHAMBER COMMUNICATING WITH THE INSIDE OF THE CONTAINER AND PROVIDED AT ITS END REMOTE FROM THE CONTAINER WITH A TRANSVERSE SURFACE AND WITH AN OPENING IN THE LATTER FOR THE OUTLET OF THE GAS, A FILTERING CAKE FITTED INSIDE THE EXPANSION CHAMBER OVER SAID TRANSVERSE SURFACE, THE PASSAGE OF GAS THROUGH SAID CAKE BEING THROTTLED AND REDUCED GRADUALLY TO ZERO UPON COMPRESSION, AN INTERMEDIATE MEMBER CARRIED BY THE CAP AND ENGAGING THE SURFACE OF THE CAKE OPPOSED TO SAID TRANSVERSE BEARING SURFACE, A THREADED CONNECTION BETWEEN THE CAP AND THE CONTAINER ADAPTED UPON RELATIVE ROTATION OF THE CAP WITH REFERENCE TO THE CONTAINER TO SHIFT THE LATTER IN AXIAL DIRECTION RELATIVE TO THE CAP AND COOPERATING WITH THE INTERMEDIATE MEMBER TO SHIFT SAID MEMBER IN THE SAME DIRECTION RELATIVE TO THE CAKE TO COMPRESS THE LATTER TO A VARYING EXTENT.