Patents by Inventor John S. Schultz

John S. Schultz 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).

  • Process for stretch forming hollow metal bodies
    Patent number: 5737953
    Abstract: A process for stretch forming hollow metal bodies, such as aluminum alloy extrusions. The extrusions are stretched longitudinally, bent transversely of the pulling direction, and then subjected to pressure from an incompressible fluid in a hollow interior. In a preferred embodiment, the incompressible fluid is water at a pressure sufficient to deform at least part of the extrusion outwardly of its hollow interior. The incompressible fluid reduces dimensional distortions in the shaped product.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: April 14, 1998
    Assignee: Aluminum Company of America
    Inventors: Blair T. Allison, Thomas J. VanSumeren, Robert P. Evert, John S. Schultz