Patents by Inventor Richard Charles Swortzel

Richard Charles Swortzel 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: 5696677
    Abstract: A vehicle chassis system control according to the steps of: determining relative velocity between a corner of a vehicle body and a vehicle wheel responsive to a sensor signal from one of: (i) a relative position sensor mounted between the vehicle body corner and the vehicle wheel and (ii) a wheel rotational velocity sensor mounted to the wheel; estimating, responsive to the sensor signal, a body acceleration signal indicative of a vertical acceleration of the corner of the vehicle body; estimating, responsive to the sensor signal, a wheel acceleration signal indicative of a vertical acceleration of the vehicle wheel; estimating a dynamic normal force between the wheel and a road surface responsive to the estimated body and wheel accelerations; and providing the estimated normal dynamic force to a chassis system controller, wherein a chassis system actuator is controlled by a control command determined responsive to the estimated dynamic normal force.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: December 9, 1997
    Assignee: General Motors Corporation
    Inventors: Eldon Gerrald Leaphart, Edward John Bedner, Richard Charles Swortzel, Albert Victor Fratini, Jr., Kamal Naif Majeed
  • Patent number: 5667286
    Abstract: In a vehicle with a right front wheel brake, a right rear wheel brake, a left front wheel brake and a left rear wheel brake, a brake control system method for distributing a commanded yaw force to the wheel brakes according to the step of distributing the yaw force to the vehicle wheel brakes according to a priority hierarchy wherein each successive vehicle wheel brake in the priority hierarchy is commanded only if a sum of all previous vehicle wheel brakes in the priority hierarchy have not achieved transfer of the commanded yaw force to the vehicle body.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: September 16, 1997
    Assignee: General Motors Corporation
    Inventors: John Francis Hoying, Richard Charles Swortzel, Deron Craig Littlejohn, G. Donald Denney, Bryan Peter Riddiford