Patents Assigned to Smith & Stout Research and Development
  • Iron alloy member and method
    Patent number: 6171713
    Abstract: An impeller shoe (110) having a front side (112) with a series of half column members (114) and raised upper and lower rims (116, 118) that form the impact surface of the impeller shoe. Half columns (114) and raised rims (116, 118) are formed with carbide material (120) formed therein in order to improve wear resistance at these critical surfaces.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: January 9, 2001
    Assignee: Smith & Stout Research and Development
    Inventors: Jerry I. Smith, Anthony E. Stout