Sealing riser sleeve

  • US 6,209,617 B1
  • Filed: 11/04/1997
  • Issued: 04/03/2001
  • Est. Priority Date: 11/06/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A riser sleeve apparatus adapted to engage a riser location plug having a top surface and a perimeter and positioned on a surface of a mold cavity pattern, and wherein the apparatus is adapted to create and insulate a passage within which molten metal is accumulated, the apparatus comprising:

  • 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 deformable annular lip positioned adjacent the inner surface and extending inward into the passage, where the annular lip extends from the inner surface adjacent the second end, wherein the riser sleeve is adapted to be positioned about an outer surface of the riser location plug, wherein the second end is adapted to be positioned adjacent to top surface of the riser location plug, and wherein the annular lip is adapted to engage the riser location plug about the perimeter of the plug.

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