Patents by Inventor Ryan D. Otis

Ryan D. Otis 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).

  • Two pipe horizontal directional drilling system
    Patent number: 9598905
    Abstract: The present disclosure provides a drill drive unit and drill string make up and break up unit with a method for use with a dual pipe drill string configuration. The drill drive unit is mounted to a single carriage and includes an outer drive spindle in a position fixed to the carriage with inner drive spindle configured to rotate independent of the outer drive spindle while being able to move longitudinally at least 12 inches relative to the outer drive spindle. The method involves connecting and disconnecting inner shafts and outer shafts of the dual pipe drill string.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: March 21, 2017
    Assignee: Vermeer Manufacturing Company
    Inventors: Michael D. Van Zee, Ryan D. Otis, Clint M. Recker, David Wisniewski, Robin W. Carlson