Patents by Inventor Sean B. Ledford

Sean B. Ledford 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).

  • In-line justifier for letter and flat mail sorter
    Patent number: 8047526
    Abstract: A mail justifier system including at least one bucket for holding a flat article and a plurality of ramps configured to contact the flat article through an opening defined on the bucket to raise the flat article to a desired level. A plurality of parallel rollers is configured to enter into the opening and contact the flat article. The parallel rollers rotate causing the flat article to move within the bucket from a first position to a second position.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: November 1, 2011
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Sean B. Ledford, Pierre J. Campagnolle, Laurent Buffat
  • IN-LINE JUSTIFIER FOR LETTER AND FLAT MAIL SORTER
    Publication number: 20090230030
    Abstract: A mail justifier system including at least one bucket for holding a flat article and a plurality of ramps configured to contact the flat article through an opening defined on the bucket to raise the flat article to a desired level. A plurality of parallel rollers is configured to enter into the opening and contact the flat article. The parallel rollers rotate causing the flat article to move within the bucket from a first position to a second position.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 17, 2009
    Inventors: Sean B. Ledford, Pierre J. Campagnolle, Laurent Buffat