Patents by Inventor William F. Madison

William F. Madison 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).

  • Torpedo drag reduction employing polymer ejection
    Patent number: 4186679
    Abstract: Method and apparatus for reducing torpedo drag in which polymer drag redug material is carried by the torpedo in concentrated form, ambient water is ingested and mixed with the concentrated polymer to produce a seawater-polymer solution of predetermined concentration, and the solution is ejected from the torpedo nose to be swept rearwardly in intimate contact with the exterior surface of the torpedo under torpedo forward motion.
    Type: Grant
    Filed: March 17, 1965
    Date of Patent: February 5, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Andrew G. Fabula, James H. Green, William F. Madison