Patents Assigned to Polygon Company, Inc.
  • Spherical bearing
    Patent number: 6860638
    Abstract: A spherical bearing including a generally annular first portion having at least a partial substantially spherical outer surface and a generally annular second portion having at least a partial substantially concave surface, the outer surface at least partially engaging the concave surface, at least one of the outer surface and the concave surface having a plurality of frayed polytetraflouroethylene fibers exposed therefrom.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: March 1, 2005
    Assignee: Polygon Company, Inc.
    Inventor: Elson B. Fish