Patents by Inventor Stephen Correll

Stephen Correll 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).

  • Traffic radar system
    Patent number: 4335382
    Abstract: A traffic radar system is provided in which the speed of a target vehicle is determined by measuring the difference in frequency between a component of a doppler signal which has a frequency proportional to the relative speed of the target vehicle and a moving patrol vehicle and a reference signal having a frequency proportional to the speed of the patrol vehicle. The reference signal is developed from a tachometer device which generates a periodic signal having a frequency proportional to the rotational speed of a vehicle wheel and phase-locked loop arrangements including adjustable dividers are provided for locking an oscillator to the tachometer signal and generating a reference signal at a frequency proportional to the actual speed of the patrol vehicle. For calibration, a component of the doppler signal produced from reflections from stationary objects is used.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: June 15, 1982
    Assignee: Decatur Electronics, Inc.
    Inventors: Bryce K. Brown, Stephen Correll, Jay Schreiber, Lawrence E. Mayfield, Darrell D. Jenkins