Patents by Inventor Neil Hopkins

Neil Hopkins 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: 5690195
    Abstract: A damper includes a piston that carries a relatively compact control valve for controlling fluid flow through the piston. The control valve provides a variable amount of damping by regulating damper fluid flow between the extension chamber and the compression chamber of the damper during extension and compression strokes. Pressure regulation across the piston is controlled through two alternate flow paths as determined by the control valve. Damping through the first flow path is relatively soft and is determined according to the deflective characteristics of first and second single bi-directional annular disc valves in parallel. Damping through the second flow path is relatively firm and is determined solely by the second bi-directional single annular disc.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: November 25, 1997
    Assignee: General Motors Corporation
    Inventors: William Charles Kruckemeyer, Patrick Neil Hopkins, Richard Edward Longhouse, Michael Anthony Dimatteo, Michael Leslie Oliver