Patent ID: 6352100
Filing Date: 2002-03-05
Classification: B22C

Abstract:
Apparatus adapted to create and insulate a passage within which molten metal may accumulate, the apparatus comprising:a riser location plug having a top surface and an exterior surface, wherein the riser location plug is adapted to be positioned in operative connection with a mold cavity pattern assembly, a riser sleeve including: an inner surface longitudinally extending between an open first end and an open second end, wherein the inner surface bounds the passage, wherein the first end is adapted to fluidly communicate with a mold cavity adjacent the mold cavity, a lip positioned adjacent the inner surface and extending inward into the passage, wherein the lip extends from the inner surface adjacent the second end, wherein the riser sleeve is adapted to be positioned about the exterior surface of the riser location plug, wherein the second end is adapted to be positioned adjacent the top surface of the riser location plug, and wherein the lip is adapted to engage the exterior surface of the plug.