Patents by Inventor Danny L. Roberts

Danny L. Roberts 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).

  • Patent number: 5621994
    Abstract: A sign frame for directory or other applications, and having adjustable corners permitting the sign to assume orthogonal and nonorthogonal configurations. Each adjustable corner connector has first and second elements that respectively connect to contiguous ends of adjacent edge members making up the sign. The elements of the adjustable corner connector are pivotably interconnected at hubs that are spatially displaced from the edge members, so that the hubs fit within the outline of the assembled frame without interfering with the edge members making up that frame.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: April 22, 1997
    Assignee: APCO Graphics, Inc.
    Inventors: Ronald W. Cobb, Benjamin H. Bell, Jeff A. Hampton, Danny L. Roberts