Patents by Inventor Ronald L. Witt

Ronald L. Witt 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).

  • Fluid admission system for providing a pressure-balanced valve
    Patent number: 8272399
    Abstract: A valve assembly includes a valve housing located between a fluid inlet region maintained at a first pressure and a fluid outlet region maintained at a second pressure. A movable metering plate is located within valve housing. A fixed metering plate interacts with the movable metering plate to meter fluid flow through the valve housing. An armature is coupled to the movable metering plate and is configured to move the movable metering plate from a closed position toward an open position. The fluid admission system further includes a balancing region to balance pressure related forces acting on the movable portions of the valve, including the metering plate. A balance passageway is in communication with the balancing region and the fluid outlet region to maintain the balancing region at the second pressure of the fluid outlet region when the movable metering plate is in the closed position.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: September 25, 2012
    Assignee: Woodward, Inc.
    Inventors: Timothy J. Farrow, Gregory J. Brodsack, Ronald L. Witt
  • Fluid Admission System for Providing a Pressure-Balanced Valve
    Publication number: 20090309053
    Abstract: A valve assembly includes a valve housing located between a fluid inlet region maintained at a first pressure and a fluid outlet region maintained at a second pressure. A movable metering plate is located within valve housing. A fixed metering plate interacts with the movable metering plate to meter fluid flow through the valve housing. An armature is coupled to the movable metering plate and is configured to move the movable metering plate from a closed position toward an open position. The fluid admission system further includes a balancing region to balance pressure related forces acting on the movable portions of the valve, including the metering plate. A balance passageway is in communication with the balancing region and the fluid outlet region to maintain the balancing region at the second pressure of the fluid outlet region when the movable metering plate is in the closed position.
    Type: Application
    Filed: June 11, 2009
    Publication date: December 17, 2009
    Applicant: WOODWARD GOVERNOR COMPANY
    Inventors: Timothy J. Farrow, Gregory J. Brodsack, Ronald L. Witt