Patents by Inventor Mark Stock Hall

Mark Stock Hall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Retention of ceramic bearings
    Patent number: 6729766
    Abstract: The invention relates to a refractory bearing and in particular to a bearing for use in contact with molten metal, such as zinc and aluminum. The bearing includes a housing with a working surface and at least one wear-resistant insert secured to the working surface. The insert is secured to the housing by mechanically interlocking with a retainer assemblage. In one embodiment, the retainer assemblage engages a relief in the insert to secure the insert to the housing despite dimensional changes caused by thermal expansion. The insert preferably comprises sialon.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: May 4, 2004
    Assignee: Vesuvius Crucible Company
    Inventor: Mark Stock Hall
  • Retention of ceramic bearings
    Publication number: 20030133632
    Abstract: The invention relates to a refractory bearing and in particular to a bearing for use in contact with molten metal, such as zinc and aluminum. The bearing includes a housing with a working surface and at least one wear-resistant insert secured to the working surface. The insert is secured to the housing by mechanically interlocking with a retainer assemblage. In one embodiment, the retainer assemblage engages a relief in the insert to secure the insert to the housing despite dimensional changes caused by thermal expansion. The insert preferably comprises sialon.
    Type: Application
    Filed: January 17, 2002
    Publication date: July 17, 2003
    Inventor: Mark Stock Hall