Patents by Inventor William M. Burkes, Jr.

William M. Burkes, Jr. 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).

  • Nozzle/valve device for a ducted rocket motor
    Patent number: 4444006
    Abstract: A nozzle/valve device for a ducted rocket motor is provided. The nozzle/valve device employs a design in which a nozzle throat blockage element can be moved by translational motion within the nozzle throat section of the device. The blockage element is designed so that in the closed position the nozzle throat has a minimum cross-sectional flow area and therefore the nozzle throat is never fully closed. The seals employed in the nozzle/valve device are isolated from contact with reaction products of the gas generator and effective use of minimum amounts of erosion resistant materials is achieved.
    Type: Grant
    Filed: February 4, 1981
    Date of Patent: April 24, 1984
    Assignee: Hercules Incorporated
    Inventors: William M. Burkes, Jr., William H. Miller
  • Nozzle/valve device for a ducted rocket motor
    Patent number: 4442669
    Abstract: A nozzle/valve device for a ducted rocket motor is provided. The nozzle/valve device employs a design in which a nozzle throat blockage element can be moved by rotational motion into and out of the nozzle throat section of the device. The blockage element is designed so that in the closed position the nozzle throat has a minimum cross-sectional flow area and therefore the nozzle throat is never fully closed. The seals employed in the nozzle/valve device are isolated from contact with reaction products of the gas generator and effective use of minimum amounts of erosion resistant materials is achieved.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: April 17, 1984
    Assignee: Hercules Incorporated
    Inventors: William M. Burkes, Jr., William H. Miller
  • Nozzle/valve device for a ducted rocket motor
    Patent number: 4355663
    Abstract: A nozzle/valve device for a ducted rocket motor is provided. The nozzle valve device employs a design in which a nozzle throat blockage element can be moved by translational motion into and out of the nozzle throat section of the device. The blockage element is designed so that in the closed position the nozzle throat has a minimum cross-sectional flow area and therefore the nozzle throat is never fully closed. The seals employed in the nozzle/valve device are isolated from contact with reaction products of the gas generator and effective use of minimum amounts of erosion resistant materials is achieved.
    Type: Grant
    Filed: March 11, 1980
    Date of Patent: October 26, 1982
    Assignee: Hercules Incorporated
    Inventors: William M. Burkes, Jr., William H. Miller
  • Swing disc nozzle structure for ramjet engine
    Patent number: 4327868
    Abstract: A ramjet, swing disc, variable nozzle structure with corrosive resistant, coated graphite inserts positioned within oppositely disposed recesses in the swing disc structure.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: May 4, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: William M. Burkes, Jr.