Patents by Inventor Jeff Ehlinger

Jeff Ehlinger 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).

  • Centering structure for tubular member and method of making same
    Patent number: 7849918
    Abstract: An apparatus and method for manufacture of a unitary centralizer forming Apertures are formed in a blank to create an intermediate blank having bow spring elements within a unitary centralizer and expanding a medial portion of the bow spring elements. An expansion element is inserted into the intermediate blank. An expansive force is applied to the expansion element, thereby expanding the medial portion of the bow spring elements. Mandrels placed against the upper and lower surfaces of the expansion element receive a compressive force for transfer to the expansion element. Set screw holes are placed on the unitary centralizer for attachment.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: December 14, 2010
    Assignee: Davis-Lynch, Inc.
    Inventors: Jeff Ehlinger, Larry Graen
  • Centering Structure for Tubular Member and Method of Making Same
    Publication number: 20090008086
    Abstract: An apparatus and method for manufacture of a unitary centralizer forming Apertures are formed in a blank to create an intermediate blank having bow spring elements within a unitary centralizer and expanding a medial portion of the bow spring elements. An expansion element is inserted into the intermediate blank. An expansive force is applied to the expansion element, thereby expanding the medial portion of the bow spring elements. Mandrels placed against the upper and lower surfaces of the expansion element receive a compressive force for transfer to the expansion element. Set screw holes are placed on the unitary centralizer for attachment.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Applicant: Davis-Lynch, Inc.
    Inventors: Jeff Ehlinger, Larry Graen