Expanded plastic molding machine

Claim 1

A MOLDING MACHINE FOR EXPANDING PLASTIC MATERIAL INTO A MOLDED FORM PLASTIC ARTICLE OF APPROXIMATELY HOLLOW CYLINDRICAL SHAPE, COMPRISING AN APPROXIMATELY CIRCULAR BASE STRUCTURE, A PAIR OF MOLD HALVES HAVING APPROXIMATELY SEMICYLINDRICAL SIDE WALLS AND APPROXIMATELY SEMI-CIRCULAR TOP WALLS PIVOTALLY MOUNTED ON SAID BASE STRUCTURE FOR HORIZONTAL SWINGING MOTION TOWARD AND AWAY FROM ONE ANOTHER INTO CLOSED AND OPEN POSITION RESPECTIVELY, A HOLLOW APPROXIMATELY CYLINDRICAL CORE STRUCTURE MOUNTED ON SAID BASE STRUCTURE AND EXTENDING UPWARDLY THEREFROM SUBSTANTIALLY TO SAID TOP WALLS AND DEFINING THEREWITH AND WITH SAID BASE STRUCTURE AND SIDE WALLS AN APPROXIMATELY HOLLOW CYLINDRICAL MOLD CAVITY, POWER-OPERATED MEANS FOR SWINGING SAID MOLD HALVES TOWARD AND AWAY FROM ONE ANOTHER, MEANS FOR SUPPLYING HEATING FLUID TO SAID MOLD CAVITY, AND MEANS FOR DRAINING OFF FROM SAID MOLD CAVITY THE CONDENSATE RESULTING FROM SAID HEATING FLUID, SAID HEATING FLUID SUPPLYING MEANS INCLUDING A PAIR OF APPROXIMATELY SEMI-CIRCULAR ARCUATED HEATING FLUID MANI-/ FOLDS, ONE HEATING FLUID MANIFOLD OF EACH PAIR BEING SECURED TO THE SIDE WALL OF EACH OF SAID MOLD HALVES, A PAIR OF APPROXIMATELY SEMI-CIRCULAR ARCUATE COOLING FLUID MANIFOLDS ALSO SECURED TO THE SIDE WALL OF EACH OF SAID MOLD HALVES IN VERTICALLY-SPACED RELATIONSHIP TO SAID ARCUATE HEARING FLUID MANIFOLDS, AND A CONDENSATE DRAIN MANIFOLD SUBSTANTIALLY ENCIRCLING SAID BASE STRUCTURE IN VERTICALLY-SPACED RELATIONSHIP TO SAID HEATING AND COOLING FLUID MANIFOLD.