Patents Assigned to Yesuvius Crucible Company
  • Patent number: 6620084
    Abstract: The invention includes an end cap that can be securely mounted to the end of a ceramic spool. The end cap comprises a locking plate adapted to fit into a groove in the ceramic spool. A plurality of angularly offset holes in the locking plate align with similar holes in the end cap. Screws or pins are placed in the holes and welded in place to prevent backing out or loosening. In use, the locking plate is secured by the pins, the groove and the inside surface of the end cap, the combination of which inhibits misalignment. Thermal cycling does not loosen the end cap, cause eccentric rotation or crack the ceramic spool.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: September 16, 2003
    Assignee: Yesuvius Crucible Company
    Inventors: Alan Wells Daily, John Dodsworth
  • Patent number: 6537486
    Abstract: A refractory shape is described for transferring molten metal in a continuous casting operation. The shape includes an inner surface made from an unfired composition comprising a calcium rich grain, a hydration-resistant grain, 6-28 wt. % carbon, and a binder. The unfired composition may also include an antioxidant and silica. The inner surface resists spalling and alumina deposition.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: March 25, 2003
    Assignee: Yesuvius Crucible Company
    Inventors: Paul Martin Benson, John Prentiss Sanders, III