Patents by Inventor Milford S. Holben, Jr.

Milford S. Holben, Jr. 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).

  • Radio frequency strain monitor
    Patent number: 4843346
    Abstract: A radio frequency strain monitor includes a voltage controlled oscillator for generating an oscillating signal that is input into a propagation path. The propagation path is preferably bonded to the surface of a structure to be monitored and produces a propagated signal. A phase difference between the oscillating and propagated signals is detected and maintained at a substantially constant value which is preferably a multiple of 90.degree. by changing the frequency of the oscillating signal. Any change in frequency of the oscillating signal provides an indication of strain in the structure to which the propagation path is bonded.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: June 27, 1989
    Assignee: Administrator, National Aeronautics and Space Administration
    Inventors: Joseph S. Heyman, Robert S. Rogowski, Milford S. Holben, Jr.