Patents by Inventor Werner P. Schuhmann

Werner P. Schuhmann 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: 4277977
    Abstract: A method and apparatus for inspection of ceramic parts for defects utilizes the application of an electrical test voltage to the part to be inspected, and at the same time subjecting the part to acoustic emission analysis. Use of the acoustic emission analysis allows discovery of not only defects which may arise because of the application of the electric current, but also defects or structural damage which are already existant in the part to be tested. An apparatus for carrying out the method on a high-volume basis allows rapid insertion and removal of a part between electrodes and clamps the part in place during testing.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: July 14, 1981
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl Lubitz, Jeffrey M. Drew, Werner P. Schuhmann