Patents by Inventor Robert Lyle Leonard, Jr.

Robert Lyle Leonard, 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).

  • Frequency sweeping audio signal device
    Patent number: 5675311
    Abstract: An audio signal is generated that sweeps from a lower frequency to a higher frequency in a substantially linear function. The circuit used to produce this sweeping audio frequency has a stable power supply, a square wave oscillator, a ramp generator, a voltage controlled oscillator, a drive circuit and an audio circuit. The square wave generator is composed of logic gates that generate a square wave with near instantaneous rising and falling edges. The ramp generator creates a sweep drive signal that is a substantially linear triangular waveform.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 7, 1997
    Assignee: Yosemite Investment, Inc.
    Inventors: George Alan Burnett, Robert Lyle Leonard, Jr.