Patents by Inventor David F. Spencer

David F. Spencer 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).

  • Methods, systems and devices for detecting threatening objects and for classifying magnetic data
    Patent number: 8102260
    Abstract: A method for detecting threatening objects in a security screening system. The method includes a step of classifying unique features of magnetic data as representing a threatening object. Another step includes acquiring magnetic data. Another step includes determining if the acquired magnetic data comprises a unique feature.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: January 24, 2012
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Dale K. Kotter, Lyle G. Roybal, David T. Rohrbaugh, David F. Spencer
  • CIRCUITRY, SYSTEMS AND METHODS FOR DETECTING MAGNETIC FIELDS
    Publication number: 20100237859
    Abstract: Circuitry for detecting magnetic fields includes a first magnetoresistive sensor and a second magnetoresistive sensor configured to form a gradiometer. The circuitry includes a digital signal processor and a first feedback loop coupled between the first magnetoresistive sensor and the digital signal processor. A second feedback loop which is discrete from the first feedback loop is coupled between the second magnetoresistive sensor and the digital signal processor.
    Type: Application
    Filed: August 1, 2006
    Publication date: September 23, 2010
    Inventors: Dale K. Kotter, David F. Spencer, Lyle G. Roybal, David T. Rohrbaugh
  • Circuitry, systems and methods for detecting magnetic fields
    Patent number: 7796028
    Abstract: Circuitry for detecting magnetic fields includes a first magnetoresistive sensor and a second magnetoresistive sensor configured to form a gradiometer. The circuitry includes a digital signal processor and a first feedback loop coupled between the first magnetoresistive sensor and the digital signal processor. A second feedback loop which is discrete from the first feedback loop is coupled between the second magnetoresistive sensor and the digital signal processor.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: September 14, 2010
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Dale K. Kotter, David F. Spencer, Lyle G. Roybal, David T. Rohrbaugh
  • Bi-metal coil
    Publication number: 20100013345
    Abstract: A coil comprising an electrical conductive winding and a magnetic conductive winding configured to focus magnetic flux in the electrical conductive winding. The coil may be advantageously employed in electromechanical and electromagnetic devices.
    Type: Application
    Filed: June 26, 2006
    Publication date: January 21, 2010
    Inventors: Eric J. Yarger, John G. Richardson, David F. Spencer, Dale W. Christiansen
  • Motor/generator
    Publication number: 20090295253
    Abstract: A motor/generator comprising a magnetic structure configured to generate a compressed magnetic field, an electrical conductive winding and a magnetic conductive winding configured to focus magnetic flux in the electrical conductive winding. The motor/generator may be advantageously employed in electromechanical and electromagnetic devices.
    Type: Application
    Filed: June 26, 2006
    Publication date: December 3, 2009
    Inventors: Eric J. Yarger, John Morrison, John G. Richardson, David F. Spencer, Dale W. Christiansen, Ronald A. Larson
  • METHODS, SYSTEMS AND DEVICES FOR DETECTING THREATENING OBJECTS AND FOR CLASSIFYING MAGNETIC DATA
    Publication number: 20080231443
    Abstract: A method for detecting threatening objects in a security screening system. The method includes a step of classifying unique features of magnetic data as representing a threatening object. Another step includes acquiring magnetic data. Another step includes determining if the acquired magnetic data comprises a unique feature.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 25, 2008
    Inventors: Dale K. Kotter, Lyle G. Roybal, David T. Rohrbaugh, David F. Spencer
  • System and method for storing energy
    Publication number: 20080074083
    Abstract: A self-recharging battery comprising a generator and an energy storage device contained within the battery case. The generator comprises a magnetic structure configured to generate a compressed magnetic field and a coil configured to focus the compressed magnetic field in electrical conductive elements of the coil.
    Type: Application
    Filed: June 26, 2006
    Publication date: March 27, 2008
    Inventors: Eric J. Yarger, John Morrison, John G. Richardson, David F. Spencer, Dale W. Christiansen
  • Method and apparatus for the detection of neutrons and gamma rays
    Patent number: 6953937
    Abstract: A pulse discrimination method for discriminating between pulses having a short decay period and a long decay period, may comprise: Detecting the pulse; integrating a rise portion of the pulse; integrating a decay portion of the pulse; and comparing the integrated rise portion of the pulse with the integrated decay portion of the pulse to distinguish between a pulse having a long decay period and a pulse having a short decay period.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: October 11, 2005
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Edward L. Reber, Rahmat Aryaeinejad, David F. Spencer
  • Method and apparatus for the detection of neutrons and gamma rays
    Publication number: 20040262530
    Abstract: A pulse discrimination method for discriminating between pulses having a short decay period and a long decay period, may comprise: Detecting the pulse; integrating a rise portion of the pulse; integrating a decay portion of the pulse; and comparing the integrated rise portion of the pulse with the integrated decay portion of the pulse to distinguish between a pulse having a long decay period and a pulse having a short decay period.
    Type: Application
    Filed: June 26, 2003
    Publication date: December 30, 2004
    Inventors: Edward L. Reber, Rehmat Aryaeinejad, David F. Spencer