Patents by Inventor Donald W. Horton

Donald W. Horton 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).

  • Magnell hardness tester
    Patent number: H1554
    Abstract: An apparatus and method for testing the hardness properties of metallic st materials, wherein electromagnets are employed to replace clamping means. Said apparatus comprises two electromagnets, and a test head which comprises a ball indenter means, a conventional hydraulic hand pump, a pop-off release valve and numerous gauges. A method of testing metallic sheet materials, and specifically armors, is set forth.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: July 2, 1996
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Donald W. Horton