Patents by Inventor William B. Winkel

William B. Winkel 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).

  • Electric vehicle propulsion system employing AC induction motor control
    Patent number: 5831409
    Abstract: An electric vehicle propulsion system having a motor with first and second electrically isolated windings and a system control unit for controlling the motor, wherein the system control unit includes a first power bridge for driving the first windings and a second power bridge for driving the second windings.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: November 3, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Frank A. Lindberg, David L. Schantz, Jr., Brian H. Smith, Charles S. Kerfoot, Joseph J. Springer, Patricia A. O'Donnell, James H. DeOms, Ronnie L. Starling, Michael J. Ankrom, James L. Munro, Geoffrey B. Lansberry, Beth A. Herman, William B. Hall, Marshall G. Jones, William B. Winkel, Brian A. DeAbreu, Thomas C. Underwood, Todd M. Zaranski, Aaron D. Valdivia, Richard M. Young, Frank E. Altoz, Ngon B. Nguyen, Eric L. Mohler
  • Method and apparatus for testing a power bridge for an electric vehicle propulsion system
    Patent number: 5510725
    Abstract: A method for testing a power bridge for an electric vehicle propulsion system, the power bridge including a switching circuit having first and second switching elements operable between "on" and "off" states. The method comprises the steps of selectively switching the first and second switching elements between the "on" and "off" states, monitoring the first and second switching elements to determine whether the first and second switching elements operate between the "on" and "off" states when selectively switched, and indicating a failure o#the switching circuit when at least one of the first and second switching elements does not operate between the "on" and "off" states when selectively switched.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 23, 1996
    Assignee: Westinghouse Electric Corp.
    Inventors: David L. Schantz, Jr., William B. Hall, William B. Winkel, Geoffrey B. Lansberry