Patents by Inventor Geoffrey P. Dyer

Geoffrey P. Dyer 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).

  • Mechanical centering mechanism for rotary valve power steering system
    Patent number: 5233906
    Abstract: A hydraulic power steering rotary valve of generally conventional construction characterized in that the on-center characteristics of the valve are governed by an arrangement of rolling elements and pairs of notched elements arranged to produce a detent action between the input shaft and the sleeve or driven member. One notched element of each pair is fixed to a carrier which is connected to the sleeve or driven member by a securing device. During assembly, the carrier is free to move under the influence of springs acting on the notched elements and thereby take up a position such that after completion of assembly the notched elements and rolling elements are precisely in the correct position to provide the required detent action.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: August 10, 1993
    Assignee: A. E. Bishop & Associates
    Inventors: Arthur E. Bishop, John Baxter, Geoffrey P. Dyer