Patents Assigned to John R. Williams
  • Seal for a longitudinally movable drillstring component
    Patent number: 5901964
    Abstract: A stripper rubber for oil and gas wells, water and geo-thermal wells, having an interior surface design which includes a circular, convex knee portion in the throat area of the stripper rubber to provide additional support to the stripper rubber during insertion of a tubular member through the stripper rubber. The composition for the stripper rubber includes, in one embodiment, enhanced wear characteristics by the addition of milled fibers of Twaron.RTM. mixed homogeneously throughout the stripper rubber.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: May 11, 1999
    Assignee: John R. Williams
    Inventors: John R. Williams, Don M. Hannegan
  • Temperature indicator for cooked meats
    Patent number: 5487352
    Abstract: A temperature indicator including a barrel and shaft wherein the shaft has a number of integrally formed, longitudinally spaced seals which engage the internal bore of the barrel in order to keep the bore of the barrel sealed from any incursion of cooking juices into the barrel and from the outflow of any melted temperature sensitive material.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 30, 1996
    Assignee: John R. Williams
    Inventors: John R. Williams, Melvin T. Jacobs