Patents by Inventor Roger D. Fruechte

Roger D. Fruechte 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).

  • Road load insensitive electric power steering system
    Patent number: 4527653
    Abstract: The torque gain of an electric motor assisted power steering system is modified as a function of the estimated level of road load friction such that the relationship between the operator exerted steering torque and the resulting rate of steer is substantially insensitive to a reduction in the level of road load. The road load is estimated as a function of the operator exerted steering torque, the torque assist provided by the electric motor, and the resulting steer rate.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: July 9, 1985
    Assignee: General Motors Corporation
    Inventors: Paul D. Agarwal, Roger D. Fruechte, Alexander Kade, Thomas A. Radomski