Patents by Inventor Richard G. Pilney

Richard G. Pilney 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).

  • Proximity alert system
    Patent number: 5298883
    Abstract: A proximity alert system including a pair of portable electronic, coded transmitter/receiver units designed to operate in a specific signal band. Each unit transmits a coded signal that is picked up by the other unit. The strength of the received coded signal controls the rate of an audible beeper. The rate of the beeper indicates the approximate distance between companion units. A direction-finder antenna is used to indicate the direction of the received coded signal.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: March 29, 1994
    Inventors: Richard G. Pilney, Ronald E. Ham