Patents by Inventor Terry C. Ernst

Terry C. Ernst 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).

  • Pneumatic slide hammer
    Patent number: 5210918
    Abstract: In accordance with the present invention there is provided a pneumatic slide hammer for removing a plug from a tube or other structure including a percussive piston, a housing for containing the percussive piston and for connecting to the plug to be removed from a structure, and a slidable cylindrical valve for controlling the flow of air under superatmospheric pressure to force the percussive piston against to impact against the housing and force the plug from the housing.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: May 18, 1993
    Inventors: Walter E. Wozniak, Terry C. Ernst