Patents by Inventor Robert H. Dufort

Robert H. Dufort 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).

  • Frangible projectile for gunnery practice
    Patent number: 4165692
    Abstract: A sintered projectile having the same ballistic characteristics as a conventional combat projectile is provided with controlled strength properties and predetermined breakage lines. As a result, small, high drag fragments are produced on impact which minimizes ricochet hazards and provides a safer practice round.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: August 28, 1979
    Assignee: Calspan Corporation
    Inventor: Robert H. Dufort