Patents by Inventor Frank C. Krieger

Frank C. Krieger 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).

  • Thermal battery with reduced self-discharge
    Patent number: 5900331
    Abstract: A thermal battery has an electrolyte-cathode layer; an anode layer adjacent he electrolyte-cathode layer; a steel cell cover adjacent the anode layer; an insulating layer adjacent the steel cell cover, the insulating layer having a volume resistivity in the range of 10.sup.14 to 10.sup.17 ohm-centimeter and a decomposition temperature of less than 1400 degrees Centigrade; and a heat source adjacent the insulating layer. Preferably, the decomposition temperature is less than 300 degrees Centigrade. The insulating layer helps reduce pre-activation self discharge of the thermal battery.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: May 4, 1999
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Frank C. Krieger