Patents by Inventor Larry L. Liedtke

Larry L. Liedtke 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).

  • Liquid monopropellant for a gun
    Patent number: 4946522
    Abstract: A new solution monopropellant for use in liquid propellant guns is composed f ammonium nitrate, hydrazine hydrate, and water in a mole ratio of 1:1:0.05 to 0.30.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: August 7, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Larry L. Liedtke, H. Dean Mallory, William R. McBride, Everett M. Bens, Klaus C. Schadow, Thomas L. Boggs
  • Ignitor
    Patent number: 4170922
    Abstract: An ignitor for a liquid propellant gun having a center electrode supported nd surrounded by insulation so that only a planar or domed face is exposed. The assembly is firmly seated in the bolt nose of the gun and several outer electrode configurations with little or no precombustion area are disclosed.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: October 16, 1979
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gary L. Peterson, Larry L. Liedtke
  • Electronic ignition system for liquid explosive
    Patent number: 4104970
    Abstract: An electronic ignition system for liquid explosive such as liquid propell ammunition. An SCR is used to provide a long life trigger with high reliability. An inductor is used to limit peak current and lengthen the spark.
    Type: Grant
    Filed: February 10, 1977
    Date of Patent: August 8, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gary L. Petersen, Larry L. Liedtke
  • Liquid propellant gun
    Patent number: 3992976
    Abstract: An injection system for a liquid propellant gun including coaxial flow vas giving complete mixing of two propellant components by convergent streams, wherein ullage is eliminated by closely contouring the valves with the gun chamber and the flow valves are automatically controlled by action of the propellant pump.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: November 23, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Bruce Bartels, John W. Holtrop, Larry L. Liedtke, Russell T. Trovinger