Apparatus for extrusion coating of pipe

Claim 1

IN APPARATUS FOR EXTRUDING A FLUID COATING MATERIAL ONTO A PIPE OR THE LIKE, A CASING ADAPTED TO CONTAIN THE COATING MATERIAL THROUGH WHICH THE PIPE IS PASSED AXIALLY, SAID CASING HAVING AN INLET AND AN OUTLET THROUGH WHICH THE PIPE PASSES, A MAIN CONE ATTACHED TO SAID CASING AT SAID OUTLET PROVIDING A RELATIVELY STEEP FRUSTO-CONICAL WALL BEYOND SAID OPENING, AN EXTRUSION CONE ATTACHED TO SAID MAIN CONE AND FORMING A CONTINUATION THEREOF, SAID EXTRUSION CONE PROVIDING A RELATIVELY FLATTER FRUSTOCONICAL WALL BEYOND SAID MAIN CONE, SAID EXTRUSION CONE BEING FORMED OF SECTIONS, SOME OF SAID SECTIONS BEING HINGEDLY MOUNTED TO SWING OUTWARDLY ON AXES EXTENDING TRANSVERSELY OF THE AXIS OF THE CONE AND ADJACENT SAID MAIN CONE, AND SPRING MEANS OPERATIVELY CONNECTED BETWEEN THE HINGEDLY MOUNTED SECTIONS OF SAID EXTRUSION CONE AND SAID MAIN CONE YIELDABLY RESISTING OUTWARD MOVEMENT OF SAID MOVABLE SECTIONS.