Patents by Inventor Allen Littlewood

Allen Littlewood 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).

  • Casing stabbing guide and method of use thereof
    Patent number: 8191621
    Abstract: A system for running a string of casing into a well utilizes a casing gripping assembly. The casing gripping assembly connects to a top drive and has radially movable gripping elements. A pair of links have upper ends pivotally connected to the casing gripping assembly. A casing elevator is mounted below the casing gripping assembly to lower ends of the links. A guide is mounted to the links between the elevator and the casing gripping assembly. The guide has a vertically extending central opening that has a lower portion that defines a flared entrance to the opening.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: June 5, 2012
    Assignee: Tesco Corporation
    Inventors: David Sweeney, Allen Littlewood
  • Casing Stabbing Guide
    Publication number: 20100300704
    Abstract: A system for running a string of casing into a well utilizes a casing gripping assembly. The casing gripping assembly connects to a top drive and has radially movable gripping elements. A pair of links have upper ends pivotally connected to the casing gripping assembly. A casing elevator is mounted below the casing gripping assembly to lower ends of the links. A guide is mounted to the links between the elevator and the casing gripping assembly. The guide has a vertically extending central opening that has a lower portion that defines a flared entrance to the opening.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 2, 2010
    Applicant: Tesco Corporation
    Inventors: David Sweeney, Allen Littlewood