Patents by Inventor Joshua Ryan Ruffin

Joshua Ryan Ruffin 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).

  • Stuffing box and packing rings for use therein
    Patent number: 9903475
    Abstract: A packing ring is disclosed for sealingly engaging a movable rod member within a stuffing box having an internal cavity. In an embodiment, the packing ring includes a carrier and a sealing ring mounted to the carrier. The sealing ring is configured to sealingly engage with an outer surface of the rod when the rod is disposed within the internal cavity. The carrier includes a radially outer surface that is configured to sealingly engage with an internal surface of the stuffing box. In addition, the carrier includes a radially inner surface that is proximate to an outer surface of the rod when the rod extends through the stuffing box. Further, the carrier includes a plurality of lubrication grooves each groove extending from the radially outer surface to the radially inner surface and configured to convey a lubricant flow between the radially outer surface and the radially inner surface.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: February 27, 2018
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Joshua Ryan Ruffin, Jeremy Michael Rappenecker
  • STUFFING BOX AND PACKING RINGS FOR USE THEREIN
    Publication number: 20170204974
    Abstract: A packing ring is disclosed for sealingly engaging a movable rod member within a stuffing box having an internal cavity. In an embodiment, the packing ring includes a carrier and a sealing ring mounted to the carrier. The sealing ring is configured to sealingly engage with an outer surface of the rod when the rod is disposed within the internal cavity. The carrier includes a radially outer surface that is configured to sealingly engage with an internal surface of the stuffing box. In addition, the carrier includes a radially inner surface that is proximate to an outer surface of the rod when the rod extends through the stuffing box. Further, the carrier includes a plurality of lubrication grooves each groove extending from the radially outer surface to the radially inner surface and configured to convey a lubricant flow between the radially outer surface and the radially inner surface.
    Type: Application
    Filed: January 15, 2016
    Publication date: July 20, 2017
    Applicant: National Oilwell Varco, L.P.
    Inventors: Joshua Ryan Ruffin, Jeremy Michael Rappenecker