Patents by Inventor Almon E. Leach

Almon E. Leach 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).

  • Sheet forming method and apparatus
    Patent number: 4145903
    Abstract: A method and apparatus for forming a superplastic metal sheet features the utilization of a plunger movable within a chamber filled with finely divided particulate material to create a column of material arranged to bear against the metal sheet and effect mold forming thereof within a mold cavity heated to required superplastic forming temperature. The material additionally aids in minimizing loss of heat from the mold cavity and insures against non-uniform heating of the metal sheet.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: March 27, 1979
    Assignee: Textron Inc.
    Inventors: Almon E. Leach, Frank J. Dietrich, James P. Morris