Patents by Inventor Bradley McCafferty

Bradley McCafferty 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).

  • Hydrodynamic retarder control apparatus
    Publication number: 20070052288
    Abstract: A hydrodynamic retarder control apparatus includes two valve spools, one, a retarder control valve, functions as a relay valve to control the on/off operation of a hydrodynamic retarder and the other, a regulator valve, functions to control the regulation of pressure at the hydrodynamic retarder. During abnormal periods of operation of the regulator valve, the retarder control valve will also function as a pressure control valve thereby limiting the maximum pressure at the hydrodynamic retarder.
    Type: Application
    Filed: September 2, 2005
    Publication date: March 8, 2007
    Inventors: Charles Long, Mark Rader, Bradley McCafferty