Patents by Inventor Francis S. Lemmer

Francis S. Lemmer 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).

  • Flame prevention system for fuel tank fires
    Patent number: 3930541
    Abstract: A device is needed to rapidly suppress gasoline fuel fires which are star as a result of the rupture of military vehicle fuel tanks by armor-piercing projectiles. The present invention contemplates a fuel fire suppressing device in the form of two hollow panels pressurized with a fire suppressant substance, such as Halon 1301; the panels are located in the path that an enemy projectile would take during passage through the fuel tank. The opening formed in each panel by the projectile permits automatic discharge of the pressurized suppressant onto the fuel escaping from the tank.
    Type: Grant
    Filed: October 22, 1974
    Date of Patent: January 6, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Donald W. Bowman, Robert C. Doetsch, Francis S. Lemmer, Edward C. Zobel