Patents by Inventor Edwin H. Spuhler

Edwin H. Spuhler 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: 4741197
    Abstract: A method of removing or ejecting a part from a first die after the part has been superplastically formed in a cavity of the die at an elevated temperature such that the part sticks to the surfaces of the die. The method includes the steps of forming a flange of the part between opposed die surfaces and providing movable plate within the die cavity and a ring on the opposed surface of the first die that engages the flange and the part in the cavity in a uniform manner. The movable plate and ring are then translated away from the die surfaces to uniformly move the part from the first die after the dies are separated.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: May 3, 1988
    Assignee: Aluminum Company of America
    Inventors: Edwin H. Spuhler, James M. Story