Patents by Inventor Steven M. Foster

Steven M. Foster 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 of making a multi-alloy turbine rotor disk
    Patent number: 4851190
    Abstract: The disclosure relates to a turbine disk and a method of making the turbine disk comprising the steps of rotating a mold, adding a first powdered metal to the rotating mold at a first rate, reducing the rate of addition of the first metal to a second rate, and adding a second powdered metal to the mold at a third rate substantially equal to the difference between the first and second rates.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: July 25, 1989
    Assignee: Williams International Corporation
    Inventors: Kim E. Bowen, Steven M. Foster, Said Izadi