Elastic melt extruder with internal pressure generating section

Claim 1

IN AN ELASTIC MELT EXTRUDER WHICH INCLUDES MEANS DEFINING A FIRST SURFACE, MEANS DEFINING A SECOND SURFACE POSITIONED CLOSELY SPACED TO AND CONFRONTING SAID FIRST SURFACE, MEANS FOR ROTATING SAID SURFACES ONE RELATIVE TO THE OTHER ABOUT AN AXIS AT AN ANGLE TO SAID SURFACES AND ABOUT WHICH SAID SURFACES ARE SYMMETRICALLY DISPOSED MEANS FOR FEEDING CHARGE MATERIAL TO THE PERIPHERY OF THE SPACE BETWEEN SAID SURFACES, AND MEANS IN ONE OF SAID SURFACES DEFINING A DISCHARGE ORIFICE FROM THE SPACE BETWEEN SAID SURFACES PROXIMATE TO SAID AXIS OF ROTATION THE IMPROVEMENT WHICH INCLUDES A PLURALITY OF IMPELLORS DISPOSED AT ARCUATE INTERVALS ABOUT SAID AXIS AND AFFIXED TO SAID FIRST SURFACE EXTENDING TOWARD AND CLOSELY SPACED FROM SAID SECOND SURFACE AND LEADING INTO SAID SPACE BETWEEN SAID CONFRONTING SURFACES TO DEFINE PASSAGEWAYS BETWEEN EACH ADJACENT PAIR OF IMPELLORS, THE LATERAL SPACING BETWEEN EACH PAIR OF IMPELLORS FORMING A SAID PASSAGEWAY INCREASING INWARDLY TOWARD THE AXIS OF ROTATION.