Extruder head for food stuff

Claim 1

A DIE PLATE ORGANIZATION FOR USE WITH A MACHINE FOR LIQUIDIZING AND EXTRUDING CEREAL GRAINS, SAID MACHINE INCLUDING A HOUSING HAVING A BORE THEREIN, A SLEEVE MOUNTED IN SAID BORE AND HAVING HELICAL THREADS ON THE INTERNAL SURFACE THEREOF, AN AUGER MOUNTED FOR ROTATION WITHIN SAID SLEEVE AND HAVING HELICAL THREADS ON THE EXTERNAL SURFACE THEREOF, THE DIAMETER OF SAID THREADS ON SAID AUGER BEING LESS THAN THE INTERNAL DIAMETER OF THE THREADS ON THE INTERNAL SURFACE OF SAID SLEEVE TO DEFINE BETWEEN SAID SLEEVE AND AUGER AN AXIALLY-EXTENDING ANNULAR PASSAGE, SAID DIE PLATE ORGANIZATION CLOSING SAID BORE AT ONE END THEREOF AND COMPRISING, IN COMBINATION, A DIE PLATE HAVING FRONT AND REAR SURFACES; AN AXIALLY-EXTENDING, CENTRALLY-POSITIONED BOSS ON THE REAR SURFACE OF SAID DIE PLATE, SAID BOSS EXTENDING TOWARD SAID AUGER; MEANS DEFINING AN ANNULAR GROOVE OF SUBSTANTIALLY SEMICIRCULAR TRANSVERSE CROSS SECTION POSITIONED IN SAID REAR SURFACE OF SAID DIE PLATE AND SURROUNDING SAID BOSS IMMEDIATELY ADJACENT THERETO; AN ANNULAR MEMBER ABUTTING SAID REAR SURFACE OF SAID DIE PLATE AND HAVING AN INNER AXIAL SURFACE SURROUNDING SAID BOSS IN CLOSELY JUXTAPOSED RELATION THEREWITH TO DEFINE THEREBETWEEN A SHORT, NARROW ANNULAR PASSAGE OPENING AT ONE END INTO SAID ANNULAR GROOVE AND AT THE OTHER END INTO SAID AXIALLY-EXTENDING ANNULAR PASSAGE; AND MEANS DEFINING A PLURALITY OF EXTRUSION ORIFICES EXTENDING FROM THE BOTTOM OF SAID CIRCULAR GROOVE, THROUGH SAID DIE PLATE TO THE FRONT SURFACE THEREOF, SAID ANNULAR PASSAGES, SAID ANNULAR GROOVE AND SAID EXTRUSION ORIFICES EXTENDING PARALLEL TO THE AXIS OF THE AUGER AND BEING DISPOSED IN SUBSTANTIALLLY AXIAL ALIGNMENT WITH RESPECT TO EACH OTHER TO PROVIDE A SUBSTANTIALLY STRAIGHT FLOW PATH FOR THE CEREAL GRAINS EXTRUDED THROUGH THE MACHINE, UPON ROTATION OF SAID AUGER, AND INTO THE ATMOSPHERE THROUGH SAID EXTRUSION ORIFICES TO PRODUCE A PUFFED CEREAL PRODUCT.