Patents by Inventor David A. Bowar

David A. Bowar 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).

  • Connection replacement for a drilling mud motor
    Patent number: 9522443
    Abstract: A method for reconditioning a rotary connection of a rotor on a drilling mud rotor. A new rotary connection is machined from a metal blank and is provided with an externally threaded pin end which is subsequently screwed into a mating female threaded opening provided on the rotor body. The new metal connection is welded to the rotor body at an intersection of the connection and selected end of the rotor body. The threaded end of the new connection is threaded a predetermined depth which is selected to bottom out at a selected depth within the mating female threaded opening provided on the rotor body prior to the welding step.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: December 20, 2016
    Assignee: Hunting Energy Services, Inc.
    Inventors: David A. Bowar, Tyler J. Batt, William Michael Webber
  • Connection Replacement for a Drilling Mud Motor
    Publication number: 20160318131
    Abstract: A method for reconditioning a rotary connection of a rotor on a drilling mud rotor. A new rotary connection is machined from a metal blank and is provided with an externally threaded pin end which is subsequently screwed into a mating female threaded opening provided on the rotor body. The new metal connection is welded to the rotor body at an intersection of the connection and selected end of the rotor body. The threaded end of the new connection is threaded a predetermined depth which is selected to bottom out at a selected depth within the mating female threaded opening provided on the rotor body prior to the welding step.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 3, 2016
    Inventors: David A. Bowar, Tyler J. Batt, William Michael Webber
  • Downhole vibration dampener
    Patent number: 8205691
    Abstract: A down hole vibration dampener is disclosed that uses a set of polyurethane rings and steel support rings to create a shock absorber within the drill string to reduce the amount of vibration in the drill string. A splined mandrel extends longitudinally within a hollow cylindrical housing. A seal structure present between the exterior of the mandrel and the interior of the housing forms a lubricant receiving chamber. The series of polyurethane and steel rings are located in the lubricant chamber and are compressible longitudinally to absorb vibration and shock loads.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: June 26, 2012
    Assignee: Hunting Energy Services (Drilling Tools), Inc.
    Inventors: David A. Bowar, Paris E. Blair, Joseph L. Ficken
  • Downhole Vibration Dampener
    Publication number: 20100181111
    Abstract: A down hole vibration dampener is disclosed that uses a set of polyurethane rings and steel support rings to create a shock absorber within the drill string to reduce the amount of vibration in the drill string. A splined mandrel extends longitudinally within a hollow cylindrical housing. A seal structure present between the exterior of the mandrel and the interior of the housing forms a lubricant receiving chamber. The series of polyurethane and steel rings are located in the lubricant chamber and are compressible longitudinally to absorb vibration and shock loads.
    Type: Application
    Filed: January 14, 2010
    Publication date: July 22, 2010
    Applicant: Hunting Energy Services (Drilling Tools) Inc.
    Inventors: David A. Bowar, Paris E. Blair, Joseph L. Ficken