Patents by Inventor John H. Crozier

John H. Crozier 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).

  • Method and means for producing a D.C. signal proportional to the peak amplitude of an A.C. signal
    Patent number: 4647861
    Abstract: Method and means are disclosed for producing a D.C. signal proportional to the peak amplitude of an A.C. signal, which peak amplitude is proportional to the frequency of the A.C. signal. A second A.C. signal is generated from the first signal, having a frequency higher than that of the first signal and the second signal is rectified to produce an analog signal. The increase in frequency permits the subsequent processing of the analog signal in a high-frequency filter having a lower time-constant than would be possible were the analog signal produced directly by rectifying the first A.C. signal.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: March 3, 1987
    Assignee: The Superior Electric Company
    Inventors: Demetris Petritis, Robert S. Lundin, John H. Crozier