Patents by Inventor Frank E. Nardis

Frank E. Nardis 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).

  • Voice coil assembly for an electropneumatic converter
    Patent number: 4821760
    Abstract: An electropneumatic converter is provided with a voice coil having a vane directly connected to the coil. The vane and coil assembly is attached to a spring and resiliently supported by the spring for movement relative a nozzle outlet in response to dc input signals applied to the coil.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: April 18, 1989
    Assignee: The Babcock & Wilcox Company
    Inventors: Christine B. Barnes, Thomas E. Martin, Frank E. Nardis