Patents by Inventor Thomas N. Ludwig, JR.

Thomas N. Ludwig, JR. 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).

  • TUBULAR FRAME STRUCTURE AND RELATED METHOD OF CONSTRUCTION
    Publication number: 20150056003
    Abstract: A method of constructing a metal tubular frame structure utilizing a first tubular member and a second tubular member is provided. The method involves utilizing at least one opening in the first tubular member and at least one end tab on the second tubular member that together produce a keyed tubular joint when the second tubular member engages the first tubular member with the tab inserted within the opening. Keyed tubular insert-type joints, keyed tubular miter-type joints and keyed tubular flush-type joints can be formed.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 26, 2015
    Inventors: Thomas N. Ludwig, JR., Robert L. Finney, JR., Gregory A. Balnoschan