Patents by Inventor Charles R. Crain

Charles R. Crain 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).

  • Patent number: 7911211
    Abstract: An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness including transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: March 22, 2011
    Assignee: L-3 Communications Corporation
    Inventors: Charles R. Crain, Phillip D. Lane, Kelly L. Rice, James A. Youngman
  • Publication number: 20100007356
    Abstract: An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness comprising transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.
    Type: Application
    Filed: September 18, 2009
    Publication date: January 14, 2010
    Applicant: L-3 Communications Corporation, a Delaware Corporation
    Inventors: Charles R. Crain, Phillip D. Lane, Kelly L. Rice, James A. Youngman
  • Publication number: 20090058426
    Abstract: An embodiment disclosed herein is directed to a method of monitoring an electromagnetic shield effectiveness comprising transmitting a first electromagnetic field toward a first surface of an electromagnetic shield, detecting a second electromagnetic field transmitted from a second surface of the electromagnetic shield, generating a first signal corresponding to the second electromagnetic field and determining whether a defect exists at the electromagnetic shield by comparing the first signal to a predetermined threshold.
    Type: Application
    Filed: November 14, 2008
    Publication date: March 5, 2009
    Applicant: L-3 Communications Corporation, a Delaware corporation
    Inventors: Charles R. Crain, Phillip D. Lane, Kelly L. Rice, James A. Youngman
  • Patent number: 7459916
    Abstract: An embodiment disclosed herein is directed to an electromagnetic shielding defect monitoring system that includes a transmit system adapted to transmit a first electromagnetic field toward a first surface of an electromagnetically shielded enclosure, thereby generating a first current on the first surface, a stationary receive system adapted to detect a second electromagnetic field transmitted from a second surface of the electromagnetically shielded enclosure by a second current induced on the second surface by the first current and to generate a corresponding detected signal; control circuitry adapted to control operations of the transmit and receive systems; and analysis circuitry adapted to identify a location of a defect in the electromagnetically shielded enclosure based upon operations of the transmit and receive systems and based upon the detected signal.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 2, 2008
    Assignee: L-3 Communications Corporation
    Inventors: Charles R. Crain, Phillip D. Lane, Kelly L. Rice, James A. Youngman
  • Publication number: 20080074123
    Abstract: An embodiment disclosed herein is directed to an electromagnetic shielding defect monitoring system that includes a transmit system adapted to transmit a first electromagnetic field toward a first surface of an electromagnetically shielded enclosure, thereby generating a first current on the first surface, a stationary receive system adapted to detect a second electromagnetic field transmitted from a second surface of the electromagnetically shielded enclosure by a second current induced on the second surface by the first current and to generate a corresponding detected signal; control circuitry adapted to control operations of the transmit and receive systems; and analysis circuitry adapted to identify a location of a defect in the electromagnetically shielded enclosure based upon operations of the transmit and receive systems and based upon the detected signal.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 27, 2008
    Applicant: L-3 Communications Corporation, a Delaware corporation
    Inventors: Charles R. Crain, Phillip D. Lane, Kelly L. Rice, James A. Youngman