Patents by Inventor Larry Don Case

Larry Don Case 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).

  • Method and apparatus for installation and removal of a valve cover
    Patent number: 8763496
    Abstract: Apparatus and methods for removing valve cover components includes a torque transfer tool that mates with an extending portion of the valve cover assembly and has a multi-faceted segment to receive a torque-supplying wrench. A hydraulically-actuated wrench has a head with a multi-faceted portion that engages the corresponding multi-faceted segment of the torque transfer tool. The wrench's hydraulic cylinder rotates the wrench head upon actuation. The multifaceted segments can be splined. Also disclosed is a reaction tube against which the wrench can be braced prior to actuation of the cylinder.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: July 1, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Larry Don Case, Jason Neal Whaley, Randall Ferrain Weaver
  • Method and Apparatus for Installation and Removal of a Valve Cover
    Publication number: 20110283537
    Abstract: Apparatus and methods for removing valve cover components includes a torque transfer tool that mates with an extending portion of the valve cover assembly and has a multi-faceted segment to receive a torque-supplying wrench. A hydraulically-actuated wrench has a head with a multi-faceted portion that engages the corresponding multi-faceted segment of the torque transfer tool. The wrench's hydraulic cylinder rotates the wrench head upon actuation. The multifaceted segments can be splined. Also disclosed is a reaction tube against which the wrench can be braced prior to actuation of the cylinder.
    Type: Application
    Filed: May 20, 2011
    Publication date: November 24, 2011
    Applicant: National Oilwell Varco, L.P.
    Inventors: Larry Don Case, Jason Neal Whaley, Randall Ferrain Weaver