Patents by Inventor William H. Gillespie, III

William H. Gillespie, III 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).

  • Vacuum check valve
    Patent number: 4724867
    Abstract: Resilient side loading of vacuum brake booster check valves to inhibit valve pulsations and resulting valve noises generated by pulsations from the vacuum source.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: February 16, 1988
    Assignee: General Motors Corporation
    Inventors: William H. Gillespie, III, Donald L. Heffner, David A. Homan, Dennis G. Merical, James W. Miller, Donald L. Parker