Patents by Inventor Carl R. Crager

Carl R. Crager 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).

  • Crossed-field amplifier bias circuit and method for improved starting
    Patent number: 4894586
    Abstract: The present invention discloses a cross-field amplifier having an anode and cathode with a pair of permanent magnets which create a magnetic field perpendicular to an electric field created between the anode and cathode. An electric bias circuit is connected between the cathode and a power supply that normally supplies energy to an oxygen source within the amplifier. This bias circuit supplies a negative DC voltage to the cathode. After the amplifier is turned off, the DC bias holds electrons within the interaction area between the cathode and anode for supplying the electrons needed to quickly restart the amplifier.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: January 16, 1990
    Assignee: Litton Systems, Inc.
    Inventors: Carl R. Crager, Kenneth F. Ramacher, Frank A. Zawada