Patents by Inventor Albert P. Levitt

Albert P. Levitt 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).

  • Tungsten penetrators
    Patent number: 5440995
    Abstract: An improved tungsten penetrator employing tungsten whiskers of various crystalline orientations--specifically the [100] orientation. The penetrator has enhanced penetration ability and strength.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: August 15, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Albert P. Levitt
  • Method of making metal impregnated graphite fibers
    Patent number: 4157409
    Abstract: A method is disclosed for pretreating graphite fibers and woven graphite preforms so that they may be wetted and infiltrated by molten metals such as aluminum and alloys thereof. Pretreatment includes immersing graphite fibers or preforms in a bath of liquid NaK alloy at room temperature. The pretreatment allows a lower temperature and shorter immersion time than prior art processes and permits improved wetting and infiltration by the molten metal constituting the matrix of a graphite fiber reinforced metal composite.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: June 5, 1979
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Albert P. Levitt, Hans E. Band