Patents by Inventor Warren P. Froehner

Warren P. Froehner 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).

  • Igniter
    Patent number: 3964393
    Abstract: An igniter for a bore safe flare comprising a piston member and a cap mem designed to cause ignition only after the flare grain has cleared the launcher. Flame from the firing charge cannot reach the flare grain for ignition until separation of cap and piston. The cap member is fixed in the base of the flare grain and carries the ignition mix which projects into a central bore of the piston.
    Type: Grant
    Filed: June 21, 1974
    Date of Patent: June 22, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kenneth R. Foote, Joseph W. Hanzel, Warren P. Froehner