Patents by Inventor Ronald W. Friend

Ronald W. Friend 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 of calibrating vehicle speed signals
    Patent number: 5020008
    Abstract: A method of determining a calibration factor used to calibrate vehicle speed signals includes the steps of driving the vehicle over a measured distance, counting the pulses generated while driving the vehicle over the measured distance, and then calculating the calibration factor from the number of pulses counted and a nominal pulse count stored in memory. An indication of the difference in a reference speed using the old and new calibration factors is displayed to the vehicle operator who can then choose to accept or abort the new calibration factor.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: May 28, 1991
    Assignee: Allied-Signal Inc.
    Inventors: John D. Chambers, Duncan E. Estep, Walter E. Frankiewicz, Ronald W. Friend, James M. Lawson
  • Speed/rpm transmitting device
    Patent number: 4939659
    Abstract: A microcontroller having two internal timers is used to calibrate the engine rpm and wheel speed signals of a vehicle and to time the output periods of these signals, which are transmitted to, for example, digital rpm and speed indicators.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: July 3, 1990
    Assignee: Allied-Signal, Inc.
    Inventors: Stephen P. Moran, James M. Lawson, Ronald W. Friend, Duncan E. Estep