Patents by Inventor Henry A. Hillebrecht

Henry A. Hillebrecht 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).

  • Submarine missile eject system
    Patent number: 4643072
    Abstract: A variable energy missile eject system in which the rate at which cooling ter is injected into the hot gas flow from a solid propellant rocket motor may be varied to optimize the eject energy according to launch depth. A first set of injection apertures through which water is always injected provides the necessary cooling and establishes the minimum rate of water injection (maximum launch energy). Additional sets of injection apertures having varying numbers of apertures are individually controlled to allow the water injection rate to be increased by increasing the number of injection apertures.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: February 17, 1987
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Henry A. Hillebrecht