Patents by Inventor Mike J. Griffith

Mike J. Griffith 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).

  • Inflatable shifting tool
    Patent number: 6024173
    Abstract: A shifting tool for moving a movable member attached to a device in a downhole tool includes a body having a bore and a feed port connected to the bore. A diaphragm is mounted on the body for radial expansion to engage the movable member. The diaphragm is coupled to the feed port and is configured to radially expand to engage the movable member when fluid is communicated through the feed port at a predetermined inflate pressure. A position locator is used to locate the downhole device such that the body is positioned to permit the diaphragm to radially expand to engage the movable member.
    Type: Grant
    Filed: March 3, 1998
    Date of Patent: February 15, 2000
    Assignee: Schlumberger Technology Corporation
    Inventors: Dinesh R. Patel, Mike J. Griffith