Patents by Inventor Paul Mackovjak

Paul Mackovjak 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).

  • Patent number: 5897457
    Abstract: An athletic performance evaluation device utilizes ultrasonic sensing circuitry or infrared sensing circuitry, a vibration sensitive switch, and an audio input to signal a microprocessor to start a timing function that calculates therefrom an objective evaluation of the athlete's performance. A light emitting diode (LED) may be included in the apparatus to signal the athlete to begin performance while simultaneously starting the timing function. The vibration sensitive switch may be placed on the ground adjacent to a selected position on which the athlete stands to stop the timing function. In operation, the athlete jumps and the ultrasonic sensor signals the microprocessor to begin the timing function and the vibration sensor sends a second signal to stop the timing function when the athlete lands again. The interval between signals is used in distance formula h=g(I/2).sup.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: April 27, 1999
    Inventor: Paul Mackovjak