Patents by Inventor Donald E. Kennamer

Donald E. Kennamer 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).

  • Transducer in-situ testing apparatus and method
    Patent number: 7042228
    Abstract: The present invention is directed to an apparatus and method for a measurement system for the testing of transducers, and more particularly to the testing of piezoelectric transducers. The measurement system includes a transducer, a feedback amplifier coupled to the transducer and a signal processing circuit coupled to the output of the amplifier. The method of testing the transducer includes coupling the test signal to the transducer, disabling the amplifier, and measuring the response of the transducer to the test signal with the test processing circuit.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: May 9, 2006
    Assignee: Oceana Sensor Technologies, Inc.
    Inventors: Richard W. Lally, Donald E. Kennamer, Isaak Baber
  • Transducer in-situ testing apparatus and method
    Publication number: 20040194532
    Abstract: The present invention is directed to an apparatus and method for a measurement system for the testing of transducers, and more particularly to the testing of piezoelectric transducers. The measurement system includes a transducer, a feedback amplifier coupled to the transducer and a signal processing circuit coupled to the output of the amplifier. The method of testing the transducer includes coupling the test signal to the transducer, disabling the amplifier, and measuring the response of the transducer to the test signal with the test processing circuit.
    Type: Application
    Filed: February 9, 2004
    Publication date: October 7, 2004
    Applicant: Oceana Sensor Technologies, Inc.
    Inventors: Richard W. Lally, Donald E. Kennamer, Isaak Baber
  • Magnetostrictive-compensated core of electromagnetic device
    Patent number: 6476532
    Abstract: The present invention eliminates vibration of an electromagnetic device, apparatus or machine caused by magnetostrictive and Joule effects. Specifically, the present invention discloses making an electromagnetic device, apparatus or machine with magnetostrictive contracting and magnetostrictive expanding materials. Once exposed to a magnetic field, the amount of contraction and expansion of the materials should be virtually the same to minimize generation of vibratory energy that can be transmitted from a core to a housing.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: November 5, 2002
    Assignees: Newport News Shipbuilding, Dry Dock Company
    Inventor: Donald E. Kennamer