Patents by Inventor John F. Schratt

John F. Schratt 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).

  • Apparatus for cryogenic proof testing of rotating parts
    Patent number: 4445790
    Abstract: An apparatus to test a rotating metal part at a cryogenic temperature is disclosed. This apparatus includes an inner chamber wherein a metal part can be mounted for rotation and brought to a cryogenic temperature and then placed in a vacuum. The container wall is formed to contain a cryogenic liquid and a cover is placed over the container which also includes a cryogenic liquid. Insulating material is used around the container and control valves and conduits provide for fluid transfer within the apparatus.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: May 1, 1984
    Assignee: United Technologies Corporation
    Inventors: John F. Schratt, Joseph J. Weber