Patents by Inventor Henry E. Dornak, Jr.

Henry E. Dornak, 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).

  • Marine vessel propulsion system
    Patent number: 3933113
    Abstract: A marine vessel is propelled by pumping water from a water intake line through a horizontal nozzle into a first generally horizontal submerged passageway containing a venturi section and extending from an internal chamber surrounding the nozzle to a submerged outlet in the hull of the vessel and admitting supplemental water into the chamber through a second generally horizontal submerged passageway extending into the chamber from a submerged inlet in the hull of the vessel and through a generally vertical passageway extending into the chamber beneath the nozzle from a bottom inlet in the hull of the vessel.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: January 20, 1976
    Assignee: Exxon Research and Engineering Company
    Inventor: Henry E. Dornak, Jr.