Patents by Inventor Allan J. Rodrigue

Allan J. Rodrigue 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).

  • Thermal testing of ceramic components using a thermal gradient
    Patent number: 5567051
    Abstract: Non-destructive evaluation of a ceramic nozzle is accomplished by generating a thermal gradient across the nozzle while it is mounted in a test rig. The thermal gradient is then measured and compared to a preselected gradient that is representative of the harshest condition to which the nozzle will be exposed during its operating life. The thermal gradient is adjusted until it approximates the preselected gradient. The nozzle is then observed for any cracks which reveal a weakness in the ceramic.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: October 22, 1996
    Assignee: AlliedSignal Inc.
    Inventors: Richard E. Annati, Allan J. Rodrigue, James T. Sublett, Craig W. Irwin