Patents by Inventor Jeffrey J Grinnell

Jeffrey J Grinnell 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).

  • Apparatus for delivering a tool into a submerged bore
    Patent number: 7512207
    Abstract: An apparatus for delivering a tool into a nuclear reactor jet pump submerged in a reactor pool includes a frame, and a propulsion unit for controlling the movement of the tool delivery apparatus within a pool of liquid. A guide assembly provides for delivery and insertion of the tool into an inlet of the jet pump and includes a bore insertion portion. A tool position driver provides for controlling the vertical position of the tool in relation to the guide assembly.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: March 31, 2009
    Assignee: General Electric Company
    Inventors: Jarred Smith, Jack T Matsumoto, Christopher M Welsh, Trevor J Davis, Jeffrey J Grinnell, David P Ketcham