Patents by Inventor Porter H. Mitchell, Jr.

Porter H. Mitchell, 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).

  • Method and apparatus for manufacturing an article using a support structure for supporting an article during manufacture therefor
    Patent number: 5362427
    Abstract: Apparatus and method for supporting at least a portion of an article while the article is being formed. A source of self-adhering particles is directed by a particle jetting device, or the like, to a predetermined position in a controlled environment to form the article. A support structure is carried in the controlled environment for substantially rigidly supporting at least a portion of the article during the formation of the article (by build-up of the self-adhering particles). The support structure is a fluid which changes state to a solid responsive to an electrical charge and reverts back to a fluid responsive to removal of the electrical charge.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: November 8, 1994
    Inventor: Porter H. Mitchell, Jr.