Patents by Inventor Clifton D. Eggleston

Clifton D. Eggleston 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).

  • Replaceable sleeve for a cylinder liner
    Patent number: 8534184
    Abstract: A pump cylinder liner apparatus includes a replaceable sleeve captured between two cylinder hull portions that are releasably coupled to allow access to the sleeve for replacement. An elastomeric material or tube may be disposed between the sleeve and the two coupled hull portions for radial compressive pre-loading of the sleeve upon assembly and during operation.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: September 17, 2013
    Assignee: National Oilwell Varco, L.P.
    Inventors: Andrew Dale Riley, Clifton D. Eggleston
  • REPLACEABLE SLEEVE FOR A CYLINDER LINER
    Publication number: 20100139928
    Abstract: A pump cylinder liner apparatus includes a replaceable sleeve captured between two cylinder hull portions that are releasably coupled to allow access to the sleeve for replacement. An elastomeric material or tube may be disposed between the sleeve and the two coupled hull portions for radial compressive pre-loading of the sleeve upon assembly and during operation.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 10, 2010
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Andrew Dale Riley, Clifton D. Eggleston