Device for manufacturing foam

Claim 1

IN A DEVICE FOR THE PRODUCTION OF SYNTHETIC FOAM BY MIXING IN ACCORDANCE WITH A SELECTIVELY VARIABLE PREDETERMINED RATIO TWO COMPONENTS IN THE PRESENCE OF COMPRESSED GAS, THE COMBINATION OF A TWO-BRANCH CONDUIT FED FROM A SOURCE OF PRESSURIZED GAS, A CONTROL UNIT CONNECTED TO ONE BRANCH OF SAID CONDUIT, TWO PUMPS, EACH BEING OPERABLE WHEN ENERGIZED TO DELIVER ONE OF SAID COMPONENTS, BOTH PUMPS BEING CONNECTED TO SAID CONTROL UNIT RECEIVING FROM SAID CONTROL UNIT PUMP ENERGIZING PULSATING GAS STREAMS APPORTIONED IN ACCORDANCE WITH THE SAID RATIO, AND A FOAM GENERATING UNIT COMPISING A STRUCTURE DEFINING ON ITS INTERIOR IN SUCCESSION A GAS CHAMBER INTERCONNECTED TO THE OTHER BRANCH OF SAID CONDUIT FOR RECEIVING COMPRESSED GAS, AN INPREGNATING CHAMBER CONNECTED TO THE PUMP OF ONE COMPONENT FOR RECEIVING DELIVERED THEREFROM SAID ONE COMPONENT AND AN EXPANSION CHAMBER, SAID STRUCTURE FURTHERMORE DEFINING A MIXING CHAMBER CONNECTED TO SAID EXPANSION CHAMBER AND INTERCONNECTED TO THE OTHER PUMP FOR RECEIVING DELIVERED THEREFROM THE OTHER COMPONENT, A PERFORATED GUIDE SEPARATING SAID GAS AND IMPREGNATING CHAMBERS GUIDING THE COMPRESSED GAS INTO THE IMPREGNATING CHAMBER PRODUCING THEREIN WITH THE FIRST COMPONENT COARSE FOAM, A STRAINER SEPARATING SAID IMPREGNATING AND EXPANSION CHAMBERS, THE PRESSURE OF THE GAS FORCING THE COARSE FOAM FROM THE IMPREGNATING CHAMBER THROUGH THE STRAINER INTO THE EXPANSION CHAMBER PRODUCING THEREBY A FINELY POROUS FOAM SAID GAS CHAMBER, IMPREGNATING CHAMBER AND EXPANSION CHAMBER BEING ALIGNED IN ONE DIRECTION IN SAID STRUCTURE THE COMPRESSED GAS PROCEEDING IN THAT DIRECTION THROUGHOUT FROM SAID GAS CHAMBER THROUGH SAID IMPREGNATING CHAMBER TO SAID EXPANSION CHAMBER, THE PRESSURE OF SAID GAS THENCE FORCING THE FINELY POROUS FOAM FROM THE EXPANSION CHAMBER INTO THE MIXING CHAMBER, SAID SECOND COMPONENT BEING INTIMATELY MIXED WITH THE FOAM IN THE MIXING CHAMBER, AND VALVE MEANS INCLUDING A SINGLE HANDLE FOR CONTROLLING THE DELIVERY OF THE COMPRESSED GAS AND THE TWO COMPONENTS TO THE RESPECTIVE CHAMBERS.