Patents by Inventor Alan H. Kitching

Alan H. Kitching 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).

  • Downhole pulse generating device for through-bore operations
    Patent number: 9598923
    Abstract: A downhole tool comprises a housing having a longitudinal bore and an agitator assembly disposed within the longitudinal bore of the housing. A removable component is disposed within the longitudinal bore and can be removed from the housing so as to at least partially open the longitudinal bore.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: March 21, 2017
    Assignee: National Oilwell Varco, L.P.
    Inventors: Russell Gilleylen, Haresh Ghansyam, James R. Streater, Jr., Deepthi Setlur, Alan H. Kitching, Shiran Waas, Murray Gilbertson
  • Lightweight and flexible rotors for positive displacement devices
    Patent number: 9441627
    Abstract: A rotor for a progressive cavity device has a central axis and includes an outer tubular. The outer tubular has a radially outer surface and a radially inner surface defining a rotor cavity. The outer surface includes at least one helical rotor lobe. The rotor also includes a filler structure disposed within the rotor cavity. The outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: September 13, 2016
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventor: Alan H. Kitching
  • DOWNHOLE PULSE GENERATING DEVICE FOR THROUGH-BORE OPERATIONS
    Publication number: 20140151068
    Abstract: A downhole tool comprises a housing having a longitudinal bore and an agitator assembly disposed within the longitudinal bore of the housing. A removable component is disposed within the longitudinal bore and can be removed from the housing so as to at least partially open the longitudinal bore.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 5, 2014
    Applicant: National Oilwell Varco, L.P.
    Inventors: Russell GILLEYLEN, Haresh Ghansyam, James R. Streater, JR., Deepthi Setlur, Alan H. Kitching, Shiran Waas, Murray Gilbertson
  • Lightweight and Flexible Rotors for Positive Displacement Devices
    Publication number: 20140119974
    Abstract: A rotor for a progressive cavity device has a central axis and includes an outer tubular. The outer tubular has a radially outer surface and a radially inner surface defining a rotor cavity. The outer surface includes at least one helical rotor lobe. The rotor also includes a filler structure disposed within the rotor cavity. The outer tubular is made of a first material having a first density and the filler structure is made of a second material having a second density that is less than the first density.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 1, 2014
    Applicant: National Oilwell Varco, L.P.
    Inventor: Alan H. Kitching