Patents by Inventor Keith George Kaase

Keith George Kaase 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).

  • Hydrodynamic journal bearing flow control bushing for a rotating control device
    Patent number: 9022131
    Abstract: A rotating control device comprises an outer housing having a bore for receiving a tubular member. An inner housing and a piston assembly are rotatably disposed within the outer housing. An annular sealing assembly is disposed between the piston assembly and the inner housing so that axial movement of the piston assembly moves the annular sealing assembly into sealing engagement with the inner housing and the tubular member. A plurality of bearings is disposed between the inner housing and the outer housing. At least one of the plurality of bearings is a hydrodynamic journal bearing.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: May 5, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventor: Keith George Kaase