Patents by Inventor Donald A. Uhlir

Donald A. Uhlir 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: 5486382
    Abstract: An article (22) is coated with a cermet coating (20) by first roughening and oxidizing the surface to be coated. A mixture is formed of a metallic powder having a mean particle size of less than about 5 micrometers, and a ceramic powder having at least some of the particle of a size less than the mean particle size of the metallic powder. The mixture of the metallic powder and the ceramic powder desirably has a coating coefficient of thermal expansion of about that of the article coefficient of thermal expansion after firing. The mixture of metallic and ceramic powders is slurried and applied to the prepared surface (24) of the article (22), preferably by spraying. The coated article is heated to an intermediate temperature to vaporize the carrier liquid, and thereafter to high temperature to sinter the coating.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: January 23, 1996
    Assignee: Hughes Missile Systems Company
    Inventors: Joseph A. Ference, Ronald E. Bullock, Donald A. Uhlir, Michael L. Duhl, Sam A. Ropelato